My mother is fearful of everything. Fear to switch on the fan, fear to take bath, fear of cooker sounds etc etc. Chant Bhairavi Bagavathi Bagamalini Namo Namaha as many times as possible.
When you say I am frustrated or I have tried lot of things nothing worked. Focus on third eye, chant Om Joom Saha Saha Joom Om as many times as you can. Do this for a month.