How did you fix your insecurities?

Hey all,

Found a good tag so deleted previous post. Anyway:

So, I've always seen myself as a physical looser. As a person I'm nice to be around and fun but the physical aspect just doesn't work.

I have insecurities about everything in my body. First of im short 5'9', I'm light 141 lbs, I have teeth that are way too big for my mouth, and of course my hairline is receding or at least has always been very high.

And then there's the nice part. My wife decided to leave me for another man. And of course the other man is taller than me, has better hair and teeth.

I'm just in such a low point in life at the moment. I have to get rid of my insecurities so I can advance in my life. Can anyone give me any tips or tricks?