The biggest enemy for most bettors isn't the oddsmakers—it's themselves. Emotional betting, chasing losses, and confirmation bias lead to more losses than bad picks. Successful betting requires discipline. Establish a bankroll management system, stick to your handicapping process, and never bet more than you can afford to lose. Today's markets are more efficient than ever. The edge comes from process and patience, not from trying to outsmart the books on every game.