The Pragmatic Programmer (Andrew Hunt, Dave Thomas), The Manager's Path (Camille Fourier), How To Win Friends and Influence People (Dale Carnegie). These books

The Pragmatic Programmer (Andrew Hunt, Dave Thomas), The Manager's Path (Camille Fourier), How To Win Friends and Influence People (Dale Carnegie). These books helped me to realize that many insecurities I had where "common" in Software Engineering field. The last one is especially good if you're looking for improve your relations with people.