More raise less limp on pre flop. Use more 3bet pre flop, don't pay to see, don't throw waiting for what will hit, play betting and winning pots when your opponent don't hit anything.
Playing aggressively you'll pull pots when hits something or when the opponent plays to see the flop (and misses, what will happen most of the time, being aggressive in pre flop your bluff will be more credible in post flop).
Punish limpers when you're playing in position and make the game become more expensive pre flop. If your opponent raise many times pre flop, when he opens in late position 3bet him.