BD,

2 things I'd suggest. First, as you are playing live, stay at the lowest stakes possible and play tight. Watch out for variance, as you don't have the roll to sustain any kind of losing streak due to bad cards, bad play or tilt.

Second, keep a separate account. Don't spend anything out of your roll! You only invested $70 to get this, so don't squander it. Heck, take the $70 out, and from now on you're playing on someone else's money. Make it a point of pride that you never have to invest any more of your "own" money. It works nicely to keep your head straight, and impresses the neighbors.