If it makes you feel any better, everyone has an old identity-level limiting belief ("gremlin") lurking in their depths.... and it's the "theme" that keeps coming up, having your buttons get pushed, demands to be dealt with, resolved, released, or let loose on the world.
You might want to look at what yours is, because just seeing it in the light of day takes away much of its power over you. To find it, look to see what you believe about yourself, a deeply unconscious level (like something your 3 year old self would say, not your grown-up, conscious, figuring-it-out enlightened self):
""you have to work hard, you have to have a grand purpose, it all has to be difficult" and that means that I am _______.
When you find it, it'll hit you like a ton of bricks. You'll see that it's been running you in every area of your life, beneath the level of your awareness.
Mine was "I am worthless."