Unfortunately most of us have grown up believing everything we are told about ourselves by other people. If one person says you don't look good in hats - that's it! We believe from that moment on that we 'don't look good in hats'! This applies to many facets of our lives, from how we look to what we are capable of. Now it's time to take a reality check. Someone else's reality it isn't yours. If someone says 'you're no good at .....', that's just their opinion (which they are entitled to, but is often marred by their own thoughts and desires), but it's not your reality.
It's time to stop living in the universe created by other people and re-enter your own. Where your beliefs and aspirations are all true and reachable for you. If you believe you look good in hats - so be it!