And you have the respect of both yourself and others for who you are. Then drop it. Then find ways to remind yourself of this. It's his blood pressure, not yours, that will be a problem. Get recorded books, so you can feed your mind and make good use of the time.
Most people live with a victim mentality.
You can choose to live with an attitude of victory and a persona of strength. Your experience, then, becomes a tremendous asset. As do your connections, your network of people you have been helping throughout your life, and your many years of learning. As you age, you accumulate battle scars. You deal with inlaws, kids who defy you, and government agencies.