well said! Attachment to money can make you depressed and greedy, so it is best to avoid forming any attachments if you are trying to make it in the long run.Attachment is a form of emotion. Being attached to the money you are trading will make you fearful of loss, worried and anxious about the future market movements, depressed with losses, greedy for profits, and angry with losses.
Development of trading psychology is the key to overcoming all these problems. In my personal experience, I have never seen traders who have been able to make consistent profits without developing their psychology.