Is everything that makes you happy the right thing?

I was reading a book and it focuses on living a positive life. At one part it says that everything we do in life that makes us feel happy are right. Nothing is wrong with them if we are happy at the end of it. I thought about the crazy things I’ve done in the past that I would consider “wrong” before, but I was happy… So this book says they weren’t wrong, they were right in my life.
What do you think?