It’s so important we keep our minds active -with the right stuff, so this isn’t about worrying, procrastination etc.
Trying something new like a hobby, interest or meeting new people is good for our brains, it helps create new neural pathways in the brain which we need. Think about your children and grandchildren, they are always learning something new as they grow and as a result, their minds are forming these new neural pathways all the time. Well, there is nothing that says our brains can’t do the same, so why stop?