Im about to do Atkins,,, im 13, iv got about 15 extra lbs.... will it work?

I really wana do somthing to lose weight.... iv tried every thing! my dad claims that atkins dosent work... hes says u gain all the weight back.... but i heard that it dosent happen to everybody. Plus it might not have some of the drawbacks that it has on adults.... does it work? what can i eat on atkins? iv only heard good things about it.... other than u gain all the weight back... help!