How can a 54 year old male reduce stress?

I'm 52, a doctor, . And the only thing that works for me is the constant reminder than in life, if we spend 100% of our efforts and energy in things we can't do a thing about, we are going to miss making a difference and enjoying what its truly enjoyable and important in life. In other words, the" crap" doesn't hit the fan unless you threw it yourself or allowed it to happen...
Stay active. Exercise is a great way to relieve stress. Your body releases endorphins during exercise, which can help you feel calm. If you exercise 30 - 60 minutes a day, your stress levels can improve. When stressed, take 5 slow, deep breaths with your eyes closed, then roll your shoulders forward 5 times, then back 5 times. This will slow your heart rate and release tension in your neck and shoulders.