Question on what to do next

I'm only trying to get suggestions for him to try. I know that I can't make his stress go away totally. I do plan to talk with our son's about the amount of stress they directly cause to their father. He askes me to try to come up with ideals to help him de-stress. He know's its a problem. He asked our doctor how to de-stress and her response was to try to find something to de-stress with. For me music works. I also have hobbies that I love to do. I also love to cook and learn to make new foods. He helped me come up with ways to destress about 6 years ago when my bp was so high the dr's were scared. For him though it's different. He was brought up in a country where the dad went to work came home and watched tv. He was the problem solver and didn't have problems. This is very very foreign to him. He use to just take a nap and the stress was better but since his diagnosis three years ago that has stopped working. He is at his witts end and is scared of having a heart attack or worse. So that is why I am asking you very smart folks for ideals so I can share them with him and hopefully help him to find a way to de-stress. Take care