Kyle,
Best of luck and while I'm no psychic, perhaps things will work out better than you imagine right now. I find things often will if you have faith and do the right things and be the best you can be.
It sounded to me like your ex and your mom really just want you to be who they KNOW you really are deep down and I believe things will vastly improve after you get help and are not using any longer. It will take time and strength but it will be SO worth it! Your daughter is lucky to have a father who loves her SO much!
Please check back with us, this board is great and we'll all be here for you when you get out!
Karen