In short, my advice is to "make incompressible memories". Your brain collapses similar experiences into each other. Frequently change everything about your life.

I tend to group major life changes around (1) family/work, (2) yearly themes, and (3) "characters". Every year or two I get a radically new haircut and wardrobe and immerse myself into an imaginary role. My last phase was "mullet man" and now I'm a "europop DJ" haha