Attachment is an Illusion, Detachment shows you the reality.
The memories that start marching in a procession before your eyes, taking your attention away, disturbing your focus are the worst enemies. Mind plays weird games when you get attached, be it with people or with things. Detachment is often misunderstood for being Uninterested, whereas it actually means being Non-Possessive. You have to let go of what could have been, how you should have acted and what you wish you would have said differently. You have to accept that you can’t change the past experiences, opinions of others at that moment in time or outcomes from their choices or yours. We should learn to detach ourselves from us, thereby achieving freedom, the inner freedom. The inner freedom lets you expect nothing from you nor from others thereby providing Tranquility. Detach yourself and enjoy the Reality.