You simply must ask for what you need in order to be on the right track to a healthy lifestyle..such as:
Tell your mother-in-law you don't want seconds.
Ask your other half to stop bringing you chocolates.
Speak up for the place with great salads when your co-workers are picking a restaurant for lunch, or ordering lunch for the office.
Whatever you need to do to succeed at weight loss (or just be healthier), ask for it—make yourself a priority and assert yourself.