I was perusing the internet the other day, in my infinite boredom at work, and I came across a few sites that I think would benefit the members of this group (I know they certainly help me). They're just a few sites on how to conquer your self-doubt; the first one is a general topic on self-doubt, the others are specific to the aspect of self-doubt with writing, and dealing with criticism.

Winning Strategies to Conquer Self Doubt

5 Ways for Writers to Blast Through Self-Doubt

Five Steps towards Making Peace with Criticism

Does Writing Make you Feel Like a Failure or a Fraud? (How that Can Boost Your Creativity)

The Four Fears That Stop You From Writing

I also would reccomend getting an editor for stories. Just someone to go through and read your stories and change little things about them.