No. There are several effective ways to reduce, although not eliminate, the risk of breast cancer in women at high risk. Options include:
Lifestyle changes (dietary modifications, limited alcohol consumption, no smoking, regular exercise, etc.)
For cases of very high risk, surgery (prophylactic mastectomies and prophylactic removal of ovaries) may be considered.
Be sure that you have consulted with a physician or genetic counselor before you make assumptions about your level of risk for breast cancer.