Don't play too many hands
A common mistake in Texas Holdem is to call a bet on the first betting round when really, you should be folding. People do this because they want to see a cheap flop in hopes to get lucky, and they’ll do it with pretty much any hand. The probabilities of hitting the flop are already low to being with, but what happens when a subsequent better raises? Do you feel obligated to call? And what if you do and hit nothing when the flop comes? You’ll have to fold anyway. Playing to many hands is like throwing your money away, so unless you are in a position where you can really afford to do so, don’t do it.