Practicing good nutrition is beneficial for everyone. It's particularly important for women who've completed their initial treatment because obesity may raise a woman's risk of recurrence. A well-balanced diet will also give you the energy required to do the things you love.
Get 5 servings of fruits and vegetables every day.
Eat whole grains.
Take a daily multi-vitamin.
Limit alcohol to one drink a day.
Cut down on "bad" fats (saturated and trans fats) and try to eat more "good" fats
(polyunsaturated and monosaturated) like olive oil, nuts, avocado, etc
.