Honestly, while the beginning of your post sounded self-judging and harsh, I think that you realized partway through writing it that you CAN handle yourself and you ARE. You just haven't fully acknowledged it yet to yourself. You're taking very positive steps (going to the gender support group, coming out to people who are close to you), and even if/when you lose faith in yourself, it sounds like you'll have some stability to get you right back onto that positive way of thinking. Major props to you!