Zizek!

Disclaimer: I generally dislike leftists, but here I can sympathize.

There is a problem with this perspective. Why do you want to be interesting instead of happy? Isn't the end goal still to be happy?

Does that make you feel happier, than if you just aimed to be happy?

I have felt the exact same thing. I have felt somewhat insecure about being happy because of this feeling that all happiness is fleeting, and so being interesting was the safer, more long-term choice to lasting happiness. 

I now recognize that happiness will always be fleeting and that it's not a reason not to be happy. And I do still see that being interesting gives a kind of satisfaction and meaning that leads to greater happiness.