I ran like that for nearly 2 years,. I'd get up a little, go on a down slide and lose it all, hit a couple of good results and be way up, then go on a losing streak.
Just before joining this forum, my total online BR was down under $200. Through working on improving my game, taking BR management to heart, and perseverence, mow my total online BR has grown to just over $1200, AND is somewhat self supporting, 'cause I draw out of it for poker learning materials (books, dvds, etc) and to pay for my high speed internet connection.
So, stick with it, follow proper BR management, and you'll get there. You will still have downswings, there will always be vatiance. But, learning to control and minimize the damage is all part of the big game. You're in the right place to learn how.