"Get back your mojo by restoring your belief in yourself."
OK, you can stop either wondering or laughing now. Yes, that is a picture of me during my senior year in high school. (When our daughters first saw this picture, they said we played in "Daisy Dukes".) Now that that is out of the way, let's get to the subject at hand.
In your career journey, there will be times in which you lose your confidence, want to quit or both. To get your head back into the game, it is critical that you have someone who believes in you so that you can get back to believing in yourself. For example, one of my biggest down moments came when I least expected it. My professional career was going well; at least I thought it was. I was a programmer trainee in the IT group and had been promoted to a programmer analyst. The IT group then got a new leader. He had a town hall meeting and laid out his strategy. It was very exciting and energizing because we were going to move off of the older technologies onto the newer ones. He said that the "A and B" players would be assigned to work on the new technologies. After the town hall, my boss asked that I meet with him. He told me that I would be assigned to support an older technology until we moved to the newer ones. To make matters worse, it was supporting a software package that was over a couple of years old and they couldn't get a major part of it to work. In addition, the package was for a function (Transportation) that was low on the IT totem pole. I was one of two people assigned to support it. Obviously, they didn't think of me as an A or B player. I was very disappointed, discouraged, and discontented. It was also very embarrassing because everyone knew who was being assigned to what projects and technologies. I wallowed in my disappointment, wondering if I had made the wrong switch from accounting to IT. My mindset completely changed when I first met the other person (Lisa) supporting the system, the manager (Sue) responsible for it, and a couple of the business users (Iris and Joyce) of the system who believed in it. (They were probably the only two at that time.) I will never forget their first words, "James, we are looking forward to you working with us to get the system to work." I could tell they were genuine in their comments and truly believed in me. Their words lifted my spirits and caused me to start back believing in myself. They took me under their wings and taught me the business and the software package. We went on to get the system to work. During that time, transportation increased in its strategic importance to the company and was made a division of the company. I went on to become general manager of the Transportation division because I had come to learn the business and IT, and the president (Mike) of the division also believed in me.
I've had a couple of other down times in my journey in which people have helped me get my head back into the game. Because of how they helped me, I paid it forward by helping others. The first--and most powerful—step is getting them back to believing in themselves.
Summary: The more people you get to believe in themselves, the more people will believe in you.