With millions of thoughts rushing through the mind each day, it's important to segregate the unwanted ones. True.
I do it each day, by simply closing my eyes, concentrating on my breathing and thinking about something that makes me happy. And what makes me happiest is thinking that I am on the top of the mountain or lazily laying on the grass and observing the night sky. Trust me that helps me to know how important myself is for me. And rest everything and everyone can just f**k off