Cash games vs. Tournaments

[Yahweh]

I play on Stars but recently I've been having problems in the cash games. It seems to always come out to be a push or worse.

I'll win a big pot and spend the next 20min missing on my AK or TT and putting what I won back into the pot.(I play Tight-Aggressive) Obviously getting on a rush of cards would be the way out of this quagmire but that of course doesn't always happen.

I do well playing Sit N Go's and playing Tourneys and am thinking of just sticking to that full time.

Aside from just remaining patient in the cash games(1/2 NL) How can I get over the hump? What can I do to improve my winnings in the cash games?

Thx

Jeromy