Several years ago some friends and I developed a system for betting on MLB underdogs that was profitable for 3 straight seasons. Took a couple years off from online gambling, but got back in this spring using the same system. April and May were just horrid, and I was down 22 betting units, but I hung in there. Stuck with the plan. Well, sure enough, it paid off. I'm up 5 units now. Not getting rich, but having fun, and coming back from 22 units down feels like a big win.