How????
I don't know. My suggestion stays the same, which is to be happy with yourself. Change what you can and what you want, but it takes the same strenght or wisdom to be happy with yourself regardless of how you are.
Self forgiveness and giving yourself recognition for your virtues are only two tools I can think of for helping you right now.
Okay, another thing for fighting obsessing would be to notice your self talk and work to change it. Your internal dialoque should not be "I'm not going to think about that." Affirmation with negations have totally the opposite effect. I would suggest that if you notice your thoughts are headed where it's not productive for you, or already there, just thank your mind and say I will attend these thougths later or when it is helpful for me, but now I will think about ... and be happy for the completion of ...., or I think of an affirmation that his supportive.
Good luck, 
Iam2 
