OP -
I feel your pain, realise you are following a well trodden path. I am going through the same process, but am further down the road.
Here's what you need to do:
1) Stay at low stakes, do not go to higher stakes until you are ready.
2) Learn to manage your bankroll.
3) Work on knowing what
hands are worth playing and what to fold.
4) Learn about position.
5) Understand variance, you will lose a lot of hands that you feel entitled to win. When it happens, shrug it off and move on. Good play pays in the long run.
6) Study, ask questions, stay positive. I was recommended this book, I have to say it's made a huge difference:
http://www.blackrain79.com/p/book.html
Have a look at my blog and see how I deal with the very position you are in.
So far this month I am being absolutely crushed, I have played over 4,000 hands and I am down 32BB/100.
I have learnt that some of this is down to bad play, so it's a learning point. A lot of it is due to variance, and it stinks, it's so annoying. I am losing many, many hands when I am hugely ahead, but I know I play the hand well, and it's just variance. I have enough bankroll to ride the storm.
So, dig in, play solid ABC poker, and stick with it. When you can steadily win an average of 3-5 bb /100 you're doing OK. Then ask what to do next.
I am not there yet, but getting there.