Stik: Well done 'fessing up. We all make mistakes like that... I got lost on my solo nav right before my flight test and had to get ATC assistance... I've stuffed up a few more times as well, I can tell you. You talk about it to various people, you feel bad for a few days, but you learn from the experience and you certainly won't be making THAT little mistake again!
You have the right attitude for a pilot in any case. Anyone who DOESN'T feel a little bad after something like that obviously doesn't care enough.