Way to go!! Ya, most Important things in Life, are a lot of work usually. Your Dr. has Good reason to be proud of you. He sounds like a Terrific Guy. That was Very personal of him to share his scars and story. He must think a lot of you and Really wants you to succeed. We are Proud of you also.
Staying at a Good weight, long-term regular exercise(you don't have to kill yourself), Omega-3(I do cod-liver oil, flax seed, olive oil plus a handful of walnuts and/or almonds usually daily, etc. work Great for me. Fatty fish a couple times a week is supposed to be Good also BUT I don't like fish particularly.
Keep up your Good work and it will pay off for you.