Actively cultivating gratitude is a simple practice with a lot of power. A regular practice of reflecting on people, circumstances and things we're grateful for has a tendency to shift our focus away from what is not going so well to that which is. This not only changes our mind state in the moment, research, like in this article from the Greater Good Institute, indicates it has lasting effects for the good.
Wherever you are, whatever your circumstances, if you can take a moment to something you can be thankful for, I guarantee it will shift your experience.
Write something about yourself. No need to be fancy, just an overview.