Like you I find my age makes me less able to cope with stress. I used to be bombarded with stress as a teacher, but I could take it. But not now. Even activities for my village and church seem to be major worries at times. I cook quite a lot for various fetes and sales, and just getting the ingredients together seems a huge worry. Deep breaths, Keep Calm and Carry On etc etc! But my lovely afternoon nap restores my energy, not to mention the nine (or more) hours at night! It's 3pm and I'm just off to bed for a snooze.