What is true is already so.
Owning up to it doesn’t make it worse.
Not being open about it doesn’t make it go away.
And because it’s true, it is what is there to be interacted with.
Anything untrue isn’t there to be lived.
People can stand what is true,
for they are already enduring it.
—Eugene Gendlin
I'm pretty rational and I chose to become happy, and now I feel happy most of the time. I'm continuously choosing to be happy.
Idk if that's some valid evidence for you (or if you even care after 10 years lol), you'd have to believe me that I'm rational and that I'm actually happy, but there you go :D