That might be your problem right there. Deciding you can't do something is always a self-fulfilling prophecy. How hard have you tried?
I learned to turn my weird off a long time ago. It wasn't easy. It took many years. It was painful at times. But I did it. If I can do it, you probably can too.
P.S. You might want to think about whether or not turning your weird off is something you actually want. Being normal comes with its own set of trade-offs. But if you are going to keep your weird you should do it because it's something you decide you want, not because it's something you decide you are powerless to change.