Do your homework!
You MUST do your homework. You have nothing to be ashamed of. Nothing. Your problems are not childish.
I at the age of 30 was afraid of the world, panic attacks, couldn't go shopping on my own (difficult as I didnt really have any friends to go with) In desperation I went and saw a hypnotist, not easy for someone with social phobia. How I cringed when I tried to explain my problems, I mean, a scareycat 30 year old.
Anyway, I did tell him, he was fine it was stuff he heard on a regular basis, no big deal to him, only to me.
It helped, along with other therapy (mostly self help)
I remember my first BIG task. I was to look at, smile, and cheerfully say 'Hello' to the postman. Wow. I was SO proud of myself when I managed to do that for the first time.

I am much better now, I'm never gonna be the life and soul of the party but I can (almost, Ha!) pass for normal now.
So, write your worse fears down. All of them, right? And do it. Lets get this show on the road.

Oh, one more thing. This is not a quick process, it took me 3 years to feel 'normal' but never ever give up, you WILL get there.