Self-talk is the talking you do in your own head about yourself and the things that happen, your own "running commentary" on your life. Often this self-talk happens so automatically that you are barely aware of it. However, what you say to yourself can have a big effect on the way that you feel, and on what you can achieve. Your self talk can be like an internal coach, encouraging you, boosting your confidence, believing in you, and motivating you to achieve your goals, or it can be like an internal bully, undermining you, criticising you and beating up on you when you're down.