Heads or Tails: Impact of a Coin Toss on Life Decisions and Subsequent Happiness [pdf] (nber.org)

I'd wager intentional change almost always results in better happiness levels on principle as it is new experiences that we remember and cherish and stagnation and inaction that we regret.

There is a great novel written about this:

https://en.wikipedia.org/wiki/The_Dice_Man

Can't help but think of "No Country for Old Men" as soon I see the title of this post.

Call it, friendo.