Sri Sri Ravishankar defines attachment in a very nice way.
He says that anything that requires efforts, is attachment.
Like if you are asked to smile. Then the smile is forced. Compared to if you are happy within and smiling naturally.
Or if you don’t know how to cook and are asked to prepare a meal. It’ll be a lot of effort. And that is attachment.
But he says that anything that comes naturally, peacefully, easily, that is nirasakti, or detachment.
Worth pondering over!