I think this is one of the best self confidence quotes ever! These are very powerful words because they are so true as no one can make you feel inferior without your consent! The only way someone who insults you, belittles you or makes fun of you can succeed in making you feel bad is if you let them. That's because we are the product of our thoughts and if we dwell on what other people say or do to us only makes us feel sad. I know this from my own experience by dwelling on past hurts by various people and what did I gain from it? Nothing but sadness. What a waste of my own emotions on what other people have said or done.
Of course it’s not easy to ignore people who judge you or say things about you that you don’t like. It is easier said than done but by remembering that you are in charge of your thoughts and your feelings that gives you back your power. One of the books I recommend is an oldie but a gem "How to Win Friends and Influence People" and it's a great book to help you with building self confidence.
YOU…no one else can control what you think and what you think makes how you feel. I want to feel happy so I have trained myself to switch thoughts whenever I notice I am thinking too much about something that I don't like. It’s taken me years of practice to get to the point I am now, where I switch off thoughts of negativity that make me feel bad.
It’s easy to feel bad if you have negative thoughts and focus on something you don’t want or like. The same goes for focusing on thoughts that make you feel happy and bring you joy, the more you think of happy things and imagine nice things the happier you will feel.
Again, only you can be in charge of how you feel and it depends on what information you feed your mind.