Personal development is the key to getting the things you want out of life. You will never reach your goals if you have emotional baggage dragging you backwards. You can’t learn to shrug off that baggage until you enrich your mind and learn how to think differently. To that end, I recommend these two books as a start (or an addition) to your library. They helped me understand and change a lot regarding my interactions with others and taught me how to recognize when I was wrong, even though I was right.