Well, we tend to tell the same old stories about ourselves all the time. And, all too often, they limit us. We tell them to others ("Ah, I'm just a computer technician") and we tell them to ourselves ("I could never do something like that")
That's why I advise people to get out and do something different. Meet new people. Then reflect on what you've done and who you have met, then tell new empoweing stories about yourself.