Spend money on experiences, not things: shows, concerts, meals, travel. Rarely if ever have I regretted spending money on one, and nobody can take them away from you later.
Anyway I’ll add to this that you don’t have to like all experiences. I have tried to force myself to like travelling, but I’ve come to accept I just despise every aspect of it. Other people find it weird, but whatever.
To be happy or at least satisfied and content, it takes a lot of introspection and creativity on how to pursue what you really want, which is also rarely in a permanent state. This is often overlooked in favor of taking oversimplified life advices and time consuming setting of life goals
It also seems like people chase the dragon; keep going to restaurants and resorts. If experiences are so unforgettable, why would you repeat them each year?
And for most people it (for the outside) looks fraught with stupid dysfunction; the White Lotus kinds of things where everyone is just struggling to make it worth what they believe it is, and strain their relationships and lives in the process.
Simple resort stay in Greece with my SO is embedded in my memory forever.
I also think you should go farther than just the experience component and pair it with physical objects that keep the memories alive, vibrant and reliveable.
Meanwhile many „experiences“ is just staring at others or consuming prepared products. Don't get me wrong, it's nice to find out what other people did. But making/doing stuff yourself is much more rewardable in the long run. On top of that, we've to provide experiences to people around us as well. Not just consume experiences provided by others.