advise on 50nl->100nl transition

I've been moving up on my own for a while and got to 100NL where I had to accept the fact that I'm not good enough and move down to 50nl again. It was a fair try over 80K+ hands and now here I'm humbly asking for advise. I've tried IRC first and was asked for some of my stats and was advised to post it here, so for what it's worth here it is:

http://img16.imageshack.us/i/statsnqj.jpg/
http://img199.imageshack.us/i/stats2p.jpg/

I'm now back to 50nl and back in the money, but I am determined to get to the next level so any help is appreciated.

Thanks!