Confront your increasingly new physical limits with tact, logic, maturity & poise, vs sophomoric bravado. Adjust & stave off where you can.
If you haven't already, start to safely* lean into your emotions instead of fighting them. There's likely more of you that you haven't discovered yet & ample time, catastrophe notwithstanding.
And if you're feeling particularly BOLD, maybe make subtle attempts at peace with your mortality. You may find time starts to slow down & you move a bit [care]freer.