Right now I'm reading As It Is by Tulku Urgyen Rinpoche (if you don't have previous experience with Buddhism I'd recommend starting with something broader like Zen Mind Beginner's Mind, and find yourself a Buddhist meditation group!), and Self-Therapy by Jay Earley. Something else very much written for an intellectually-oriented audience but that gives inklings of a ladder into non-intellectual being, is Unwinding Anxiety by Judson A. Brewer. I liked it at the time, though I found I needed more help practicing the things that that book suggests, which led me deeper into Buddhism and eventually towards Dzogchen.

I wouldn't recommend How to Win Friends and Influence People, it is all about fine-tuning behavior to make a better impression on people, and that doesn't sound like the heart of the issue you described. The heart of that issue _could_ be that one clings to mind-concepts rather than trusting the whole being and feeling a connection with the universe. If so, one must slowly learn to trust the felt experience of life, to know that gut feelings and open-heartedness are just as important as thoughts (moreso in many respects), to trust that one can relax one's whole being and be carried by an infinite love within. It is a gradual progression.