To be a happy person, one has to drop all comparison. Drop all these stupid ideas of being superior and inferior. You are neither superior nor inferior. You are simply yourself! There exists no one like you, no one with whom you can be compared. Then, suddenly, you are at home.
Joy is not the absence of trouble but the presence of Christ.
In Christ we become a new creation old things are passed away and all things become new. You are a child of God, so define yourself that way, not by your past actions and behaviors. The way you see and talk about yourself is is the way others will see and talk about you. Jesus set you free to live a life that will magnify and glorify him.