Is there a cure for being eccentric?
First and foremost, there is nothing wrong with you. You don’t need a “cure” to change who you are. Caring what people think of you is natural, though. If you find that people react negatively or make you feel uncomfortable, then you may consider how your actions are contributing to that and whether you want to modify your behavior to achieve a different result. Or, try as much as you can to find people who appreciate whatever makes you unique.