Fear and Overthinking both are the effect and cause,vise versa. There must be some reason innur life which causes anxiety, over mental stress, Overthinking and then fear. It is like a chain of thoughts, once u get anxiety attack then like a chain every incidents occur and Lastly fear occur. Consult psychologist online or offline immediately and take help. Feel free to contact if needed.

Suggestions are many But suggestions won't work until the problem is eliminated and identified from the root. Where is the fearfulness stemming from. It's advised you take session of counseling to gain insight and work on your symptoms to over come it. You can consult me or any psychologist for same All the best

Probably, you are Confused between various reasons. It is better to consult a psychologist in your city personally for more understanding and clarity.