I have a favorite quote I use all the time. It’s perfect for when you, or someone you know, is feeling unimportant. It’s from Doctor Who 

“In 900 years of travel through time and space I have never met anyone who was not important.” 

Just think about that for a moment. No matter what, you are important to someone and someone is glad you are alive….. Even if it is a mad man in a blue box 😜