What has been the most useful technique or material for you to amp up your confidence, change the way you see the world, and just generally give you the attitude you needed to be successful at this and other pursuits?

I don't feel like I can make much progress with other things until I really have the inner game under lock -- until I really believe that I control my social interactions and my reality as a whole when I wish to. I just don't know where to start adjusting this.

I'm looking at a reading list a mile long, and I frankly don't have time to pick through redundancy or repetition. I want to know what works for you.

Note: I'm not entirely inept. I'm a public speaker, easy in front of a crowd, am the center/anchor or a large social group, and generally have high confidence (as I view myself and other people view me). I am trying to figure out how to leverage that extra 20% to really have the world rocking my way.