I only play micro NL2 and I am constantly afraid of bad beats - some people will call absolutely everything to the river and I have lost a lot of my (very modest) bankroll many times because I was betting & barreling high on a winning hand and got beat in the last moment. Sometimes a whole stack doesn't seem enough to make people fold a weaker hand.
I do however tell myself that over time playing the hand "right" will eventually create +EV. Being a total beginner that's a pretty hard thing to do though ><
Due to poor reading of the board and villain I am guilty of more than a few bad beats as well, I admit.