Don't think I can do this and afraid to try

I am inspired by the stories I've read on the site, I'd love to find some kind of peace, happiness, acceptance, and stability but I don't know how, thought I'd use the forum here to just post but I'm not sure I'll do it again tomorrow! I went through all the steps in about six weeks last summer then off until now, thought I could handle the sugar (part of me still thinks I can) but hard to find peace, joy, be open for my kids (who seem now just resigned to my moods in a sad kind of way). Eating breakfast, joined a step one group and am enjoying it but feel overwhelmed, not sure if I doing it all right, afraid to fail again.