Yes I have.
I have doubted and questioned.
It's something I "do", it's my nature.
I've feared and faltered too, as I'm also quite anxious by nature.
It's healthy, I think, to doubt and question, to examine oneself repeatedly, oneself and one's motives.
It's lead me to do only the things I wanted, as I wanted them.
I took the path which was exactly "right" for me because I examined every step before me and knew exactly where it lead.
As such, this doubt, it's done me good.
I'm happy today, which still feels a little odd to say.
I'm genuinely happy.