Holy Crap, I suck

I can at times play brilliant poker. At other times I can play really bad poker. A few months back I was playing heads-up 2/4. I did not really have the skill or bankroll for it, but I did it anyway. I did it with the same feeling that I had when I played on-line Blackjack. I knew I shouldn't do it, but I did. Last night I sat down to play a little HU 2/4 against my better judgement. I then won 1 buy-in from my opponent who quickly reloaded. At this point I decided that even though I should just bank my winnings I could take more off this clown. Of course, I lost it all plus another 15 and then he left. I than proceeded to donk on a complete buy-in when I jumped in another game and was out classed. I managed to win most of it back with subsequent ring game play, but the lesson here is simple. DO NOT play heads up, unless it is cheap S-N-G's for practice. I now have a $30.00 hole to dig out of this week.