There's so much I wanna do yet I'm scared
Why do you feel that way?
I know if I start editing my book I will never finish it and there's a lot of things to do and I'm afraid of feeling like shit because I do nothing.
Feeling scared of something is perfectly normal.  It's when we let that fear control our lives and prevent us from doing what we want to do that fear becomes unhealthy.  I believe in you and think you can get through this!
I just need to calm down, I guess.
That's great to hear. You are taking the first step in retaking control of your life.