As
perseverence said, take at least a week off and don't worry about the latest score, and resentment to GMAT will most likely fade away enough that you could start thinking about re-take.
I scored 550 on my first attempt, was quite disappointed, just like you now, and decided that I am not going to bother about any retakes whatsoever. After a week I cooled off enough to start working on the GMAT again.
A couple of suggestions, once you are ready to work on GMAT again.
[*]Have you been keeping consistently
error log in your preparation? This is crucial to know, so you could concentrate on your weakest points.
[*]Different people have different learning styles. You have been doing this on your own so far. Maybe you might benefit from working with someone else - study buddy. But the key is to have someone who is as much motivated to succeed in GMAT as you are, otherwise - waste of time.
[*]Again about learning styles. Depending on how high your stakes at getting GMAT over 650 you might benefit from taking GMAT prep classes. Of course, it's more serious money than getting just the study guides, but again depends on how high are your stakes.
You know better your learning style to make use of these suggestions.
Finally, GMAT is not a "loser" litmus test in any fashion. Don't let yourself get down because of the score. You have enough achievements in your life already to fall back on to know you are not a loser. So let it go, evaluate your needs and wants about GMAT, and go for it again, if it's worth it.