Value Betting Explained: How Bookmakers Think and Where to Find Edges
After 15 years compiling odds for major Irish bookmakers, I'm sharing the insider perspective on how odds are set—and where punters can find genuine value.

Patrick "Paddy" Kavanagh
Senior Betting Strategist & Advisor
The biggest enemy in betting isn't the bookmaker—it's yourself. After decades watching punters self-destruct, I've identified the psychological traps that destroy bankrolls and how to avoid them.
In twenty-five years around betting, I've seen punters with incredible analytical skills go broke. I've watched people who could predict outcomes with remarkable accuracy lose everything. Meanwhile, average punters with modest abilities maintained steady profits over decades.
The difference wasn't skill. It was psychology.
Your brain wasn't designed for gambling. It evolved to keep you alive on the African savannah, not to rationally assess probabilities and manage risk. Those ancient instincts—the ones that saved our ancestors from lions—are exactly what destroy modern bankrolls.
Let me walk you through the psychological warfare you're fighting every time you place a bet.
The gambler's fallacy is the belief that past random events influence future random events. After five consecutive red numbers on roulette, the voice in your head screams: "Black is due!"
But the wheel has no memory. Each spin is independent. The probability of black on the sixth spin is exactly what it was on the first: roughly 48.6% (accounting for the zero).
This fallacy destroys bettors because it feels so intuitively correct. We're pattern-seeking creatures—it's how we survived. When we see streaks, our brains insist they must mean something.
In sports betting, this manifests as: - "This team is due a win after four losses" - "That jockey has been unlucky—bound to come good" - "I've lost five in a row, the sixth must hit"
All nonsense. Each event is evaluated on its own merits. Previous results affect future probabilities only when they provide genuine information (like form or confidence)—not through some cosmic balancing mechanism.
"Tilt" is a poker term for the emotional state that leads to poor decisions, but it applies equally to sports betting. You're on tilt when emotions override logic.
Triggers include: - A bad beat (losing a bet you "should" have won) - A string of losses - Missing out on a big winner - Personal life stress - Alcohol
What tilt looks like: - Betting more than planned to "get it back" - Taking lower-quality bets you'd normally skip - Abandoning your staking plan - Aggressive, emotional decision-making - Ignoring your pre-set limits
I've done all of these. During my darkest betting period, I remember losing a five-fold accumulator that failed on the last leg. The last leg. Five minutes later, I'd staked three times my normal amount on an in-play bet I'd done zero research on. It lost. So I doubled down again. In ninety minutes, I'd lost more than the previous two weeks combined.
That's tilt. And it's the number one cause of recreational bettors going broke.
When we form a view—"Manchester City will win easily"—we unconsciously seek information that confirms it and discount information that contradicts it.
You'll notice the stat that supports your bet and gloss over the one that challenges it. You'll remember your winning decisions vividly and forget the losing ones. Your betting record, viewed through confirmation bias, always looks better than reality.
Combat this by: - Actively seeking reasons your bet might lose - Keeping detailed, honest records you review regularly - Asking someone else to challenge your reasoning - Writing down your logic before betting, then reviewing afterward
"I've already lost €200 today, I need to keep betting to win it back."
No, you don't. The €200 is gone regardless of what you do next. It's a sunk cost. Your decision now should be based only on whether the next bet has value—not on what happened before.
This fallacy combines with tilt to create chasing losses—perhaps the most destructive behaviour in gambling. The losses mount, the bets get bigger and more desperate, and what started as a €50 hole becomes a €500 crater.
The antidote is brutal simplicity: set a daily loss limit before you start, and honour it absolutely. When you hit that limit, stop. Walk away. Tomorrow is another day.
When you're winning, the temptation is to believe you've figured something out. You're hot. You're seeing things others miss. Your edge is undeniable.
Usually, you're just experiencing positive variance.
I've seen this movie a hundred times. Punter has a great month. Increases stakes dramatically. Gets aggressive. Variance regresses. Gives back all the profits and then some. Ends up worse than before the hot streak.
Winning doesn't make you smarter. Losing doesn't make you dumber. Short-term results tell you almost nothing about your true skill. The only reliable measure is long-term performance over hundreds of bets.
Before you bet: - Are you calm and thinking clearly? - Is this bet part of your normal strategy? - Have you genuinely assessed the value? - Are you within your planned stake size? - Have you considered reasons it might lose?
If any answer is "no," don't bet.
During losing streaks: - Reduce stake sizes temporarily - Take a day or two off - Review your strategy objectively - Accept that variance happens - Do NOT try to "win it back quickly"
During winning streaks: - Don't increase stakes dramatically - Withdraw some profits to lock them in - Maintain your process - Stay humble—variance cuts both ways - Remind yourself that hot streaks end
General habits: - Set clear session limits (time and money) before starting - Track every bet in a spreadsheet - Review monthly with brutal honesty - Have non-gambling interests and relationships - Take regular breaks from betting entirely
The best bettors I know treat betting like a job. They find no more joy in a winner than an accountant finds in balancing books. They're not gambling for excitement; they're executing a process they believe has positive expected value.
This emotional detachment is difficult to achieve, perhaps impossible for recreational bettors. But it's worth striving toward. Every degree you remove emotion from your betting decisions is a degree closer to optimal performance.
When I place a bet now, I try to feel nothing. Not excitement, not anxiety, not hope. Just the quiet knowledge that I've made the decision I believe is correct given available information. The outcome will be what it will be.
The betting industry is built on human psychology. Every flashing light, every near-miss, every promotional offer is designed to exploit the cognitive biases I've described. Bookmakers employ psychologists. They A/B test their interfaces. They know exactly which buttons to push.
You're not fighting a fair fight. The game is rigged against you psychologically before a single bet is placed.
Knowing this doesn't make you immune—I still struggle with these biases after all these years. But awareness is the first step. When you notice yourself falling into a psychological trap, you can sometimes catch yourself before the damage is done.
The goal isn't to become a betting robot. It's to recognise when your brain is lying to you and respond accordingly. That recognition—that moment of "wait, am I on tilt?" or "am I chasing sunk costs?"—is worth more than any tipster or strategy guide.
Master your psychology, and you'll beat most punters. Ignore it, and nothing else you learn matters.
Stay rational out there,
Paddy

Senior Betting Strategist & Advisor
Veteran betting strategist with 25+ years of bookmaking and analysis experience.
View ProfileAfter 15 years compiling odds for major Irish bookmakers, I'm sharing the insider perspective on how odds are set—and where punters can find genuine value.
After 25 years in the betting industry—15 as an odds compiler and 10 as an analyst—I've seen fortunes won and lost. The difference between survivors and casualties almost always comes down to one thing: bankroll management.