I would say that these habits you write about in your post could be applied to people in any age, really. Its true that the older you get, the more important it is to keep your mind and body healthy.

Do not assume that being healthy is your passport to a long life. Your longevity is not guaranteed by your age or health.

I think about this often. Doesn't matter how well you take care of yourself, there is always a possibility that you might fall sick or an unfortunate event in your life happens. For me, this a big driver for me on cutting out things that make you suffer in life. Why wait when you don't know when your life will end.

Good post!