Hello Friend, Good that you are seeking a help here. Fear, Insecurity, negativity etc are reflexion of anxiety in your mind mind. It's basically  overthinking or preoccuping your mind with such uncertain thoughts is the problem. Be positive. You can overcome this with  psychologists help. Feel free to reach out to me directly or online through Practo app for further detailed evaluation of your both physical and emotional symptoms to first identify the root cause and then recommend suitable solution.

Tell me more about your thoughts and what exactly is your fear? Consult with me or any psychologist for therapy and counseling Connect with me through practo Follow my page on Facebook juhi parashar clinical psychologist for mental health updates All the best

It could be due to various reasons. Maybe a childhood inhibition. For a detailed understanding and clarity, do consult a psychologist in your city personally.