Anatomy of beginner blowing a game

Been on a pretty good streak lately.  Drew an appointment nearly 100 points above me.  Played fairly competitvely and had an advantage in the endgame.  Like a dope I focused too much on the attack and fell victim to a bank rank mate that I could have easily prevented if I paid attention.  I think I fall too much in love with forcing moves.  Live and learn I guess. I'm encouraged I could hang with an 1100.