I’ve never been happier in my life than those times when I wasn’t bothering to try and make other people happy.
I’ve never been unhappier in my life than when either I was trying to make someone (usually many someones) happy or when somebody thought it was my place to try and make them happy.
The power of “no” is a powerful word to use.
I have had occasion to use it quite a bit with some people.
Sometimes I would even follow up the word “No” with the words “Fuck off” and that made me even happier.