You don't need to accumulate stuff and junk.
+1
It's easier now. Before internet streaming, entertainment was more scarce and we avidly collected things like music and movies (in various physical formats) and books. No need to do that as much, if at all. However, the current pitfall is buying too many gadgets too frequently.
And, of course, LBYM is crucial. At 41, it's time to get real serious. Save and invest to the maximum, but without taking away from spending on what really gives you pleasure in the present. None of us knows how long we have, so you don't want to entirely focus on deferring for the future. It's a balancing act.
OK, so if I were to give one piece of advice (and it's definitely contrarian): eat a WFPB diet for life. I started this a little before your age, and I can't begin to express the benefits, especially when comparing to those around me now. (Please don't flame me folks, sorry).
Everyone is different. One man's meat is another man's poison -- literally. So an important part of growing old well is finding out what
your own body considers healthy in terms of food, size and frequency of meals, etc. And realize that this might change over time, as your body evolves, so you'll need to tweak things.
Avoid the sun or wear sunscreen. Use hearing protection if you know you're going to be exposed to something loud. Don't wear wet sneakers or do anything that might trigger toenail fungus, because you'll likely be living with the unpleasant result for the rest of your life. OK, now I'm sounding like your mother...
