You’ve misinterpreted the advice :) It’s not about being compelled to say yes all the time to make others happy, it’s about saying yes _more_ to make yourself happy.
As an example, a work friend of mine invited me to a house party once at their shared house, there were a lot of people going but I didn’t know any of them except her. My instinctive reaction was to say “thanks, but no thanks”, but I decided to take a gamble and say yes.
I ended up having a really good evening, and I met some really great people who I now consider to be friends of my own. All because I took a gamble and said yes to something I’d typically say no to.
As an example, a work friend of mine invited me to a house party once at their shared house, there were a lot of people going but I didn’t know any of them except her. My instinctive reaction was to say “thanks, but no thanks”, but I decided to take a gamble and say yes.
I ended up having a really good evening, and I met some really great people who I now consider to be friends of my own. All because I took a gamble and said yes to something I’d typically say no to.