[header] How to not care [title] Build your opinion of yourself. [step] Don't care what people see in you. Oftentimes, the reason we care what others think of us is because we see ourselves through their eyes...but it's not good for us to base our opinion of ourselves solely on what others think of us. 
The best thing you can do to not care what others think of you is to build your opinion of yourself. Do things that make you proud of yourself so that no matter what they say, you know that you are a good, worthwhile person.