I have an extreme fear or getting breast cancer. i've seen therapist but can't shake this. you have any advice? i would like to have breast reduction

Educate yourself: Breast reduction will not significantly reduce your chance of getting breast cancer. If you have the gene, prophylactic mastectomy may be an option. Otherwise, not appropriate just for fear. Nothing you can do will make you immune or even reduce your risk much. You also know that proper surveillance against breast cancer drops your risk of dying of it to very low. To be brave, act brave.