Problems usually arise when you care too much about things.
Life's pretty much easier and happier when you just don't care about things.
But then, sometimes when you care about them is what makes the stuffs more precious.
Two mutual souls that put the same effort of caring towards one another makes it a beautiful thing.
But of course, there are things which you just need to ignore cause, ignorance is bliss. (Although I don't agree much on this)
It is a bliss and makes you happy but at the same time is well, ignorant and sad.
Knowing things and caring about things is indeed a good thing and somewhat useful.
But caring about things too much? Yeah that's when you just need to stop and not give a single care.
So yes. Not giving a ****(care) makes you happier in life