this is my 2nd, but I think I'd have given up by 6 lol
I think what you need to do is really look at why you've been unable to stick to it previously, and try to work on those issues, and, when you feel like stopping this time...... remember how it feels to have to come back and try again! Best to try to stick it out and get it sorted! I do know its easier said than done though.
Good luck this time!