i was in that situation, but i never blew an account in demo.

i thunk the problem is over trading, try to get a bit jealous with ur demo money, and take a trade only whn u feel (i mean really feel) its worth it.
i just went live today, but before then, my demo improved very well.
tell u what, look for one indicator...(lets say fibs...) just one, use it, study it and enter/exit the market based on it, try to see the market through its eyes and befor u know it, you will be in you way to really understand the market as a whole.
rgds.