We become attached not only to material objects, but also to ideas, feelings and people. If a behavior is pleasurable one day, we expect it to be pleasurable the next - and we're disappointed if it isn't. That attachment is considered the root of all suffering; non-attachment, therefore, is the Buddhist path to liberation.
Non-attachment isn't about "detaching" or withdrawing, nor is it about indifference. It's about not holding on.
If we let go of our expectations, we face less disappointment. If we are grateful for what we have without feeling entitled to it or unable to live without it, the grip weakens, and the difference between need and want crystallizes.
In this space, we're able to contemplate what we want , carefully considering whether these things will truly bring us the pain or pleasure we believe they contain.