I'm nearly 40 years old, I don't indulge in such things. The issue is that I feel inferior to everyone, including family, coworkers, etc..
Feeling of inferiority are basically learned behaviors that produce depression, sadness, and shame about ourselves. If we don't know how to recognize what's going on, then it becomes very difficult to overcome. These feelings are simply attacks from the evil one, an evil spirit, that sometimes take hold when we are young. It may have been someone in your family who made you feel you were not worthy. When parents and even those in authority say negative things to children, they place curses on them that's hard to remove because that child believes the lie at a heart level. The inferior feelings are not yours though, they were PUT ON YOU by someone who the evil one was using. When children are attacked very early by the evil one, that's because that child has a heart for Jesus, and will be a might worker for Christ if allow to flourish. So the evil one starts very early to stop that lovely child from being a mighty servant for Christ.
You will need to understand what's happening to you because it is not of Jesus. Jesus Has made us free, however, we must believe, and if you suffer this type of inferiority, then you are not able to believe to be set free.
Pray that God remove this inferiority from you. Pray a prayer of confession: tell God that you are suffering these feelings of inferiority, and ask God to removed it from you. Ask Jesus to cast out these wrong feelings so you can serve him properly. Continue to confess and continue to ask Jesus to cast these feelings out. Ask Jesus to replace these feelings with love, joy, confidence, and patience as it takes time, but Jesus will answer.
Continue to pray, don't stop. I have actually felt the evil spirits lift up off of me and fly away during my prayers to Jesus to cast them out.
I pray for you; May God bless you and remove your inferiority, and cast out any and all attacks by the evil spirit from over your life. I pray you be given love, joy, peace, confidence and patience.