You have what it takes.
You may not know it yet, but you do. You will see.
I know you have your doubts, but please look past those feelings and see all of the things you have to offer. Remember all the things you have overcome in the past. Stop second guessing yourself. Stop selling yourself short. Stop looking at other makers/bloggers/wives/women and thinking that they are better than you because maybe they make quilts, sell their organic whatever it is, or cook five course meals for their husbands while simultaneously breastfeeding and doing yoga.
Wake up. Look at your strengths. Be proud of your accomplishments, and then use them to power you on to the next endeavor. You may fail, but that is okay. "Failure is success in progress." (According to Google, Albert Einstein said that. I am going to go with that.)
For once try to see yourself as others see you. Stop thinking that all those nice compliments are people "just being nice." Realize your value...your talent...and how freakin' cool you are for just being you. No one else can be you, so just do your thing. Stop worrying about if you look dumb. Someone probably thinks you're dumb, but so what? Sometimes being "dumb" is a lot of fun. It is a lot more fun than worrying about pleasing everyone or fitting in or following a trend, so just do what you want, and do it to the best of your ability.
You are rockin' this whole "you" thing, so just keep doing what you are doing. Every morning try to take a step back and realize that you are on your way. You may not know where you are going, but be determined to make the trip a fun one. Work your butt off, and even though the results may not be what you imagined...they will be pretty great.