I made the largest improvement in my game by getting practice games (sometimes for $5 a rack, which definitely helped a lot) in with a high-stakes player. I used to play an older gentleman who used to school the hell out of the younger players looking for action. I would help him get warmed up when he showed up about 6pm and then let his prey on the table when they were ready (or thought they were). A couple thousand later I would just shoot some victory games with him for fun once he busted his mark. Having friends that are REALLY GOOD money players definitely helps a lot.