Buddhism has a very beautiful teaching that says the worst thing you can do to your soul is to tell someone their faith is wrong.

The worst thing you can think about when you're working is yourself.

The worst thing you can do to a kid is tell them that their dreams are invalid.

The worst thing we can do is to do nothing.

The worst thing in the world is to be tired.

In any moment of decision, the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing.