How do you let go of attachment to things? Don’t even try. It’s impossible. Attachment to things drops away by itself when you no longer seek to find yourself in them. In the meantime, just be aware of your attachment to things.
Do not be misled by what you see around you, or be influenced by what you see. You live in a world which is a playground of illusion, full of false paths, false values and false ideals. But you are not part of that world.