Experience has taught me that accumulating "more stuff" provides a short-time high at best. When that wears off, you invariably find that all this "stuff" you had to have needs to be stored, cared for, maintained and insured. Hence the old saying, "do you own your possessions or do they own you?"
And ask yourself this: If you stepped in front of a bus tomorrow, as you lay there on the pavement, would you really regret the stuff you never bought? Or would it be the things you never did?
Spend a moment thinking about the things you've always wanted to do and still haven't done. Maybe the best way to spend your money is to get busy doing them.
It costs a lot less to collect experiences - memories - than expensive stuff. And you'll probably find it a lot more rewarding.