Select your friendships carefully. Gather people around you who will reinforce your lifestyle.
Serve yourself, put the food away, then eat.
A doctor may know more than a peasant, but a peasant and a doctor know more together.
The brutal reality about aging is that it has only an accelerator pedal. We have yet to discover whether a brake exists for people.
Have fun, be active. Ride a bike instead of driving, for example.
I think we need to think about our physical activity as a reward, as something enjoyable and something we look forward to doing, not something that we regard as self-flogging.