What does it mean to be true to yourself

In the story Holden is always calling people phonys witch means fakes. He dosent like when people are phonys because he says they are not being true to themselfs. An example from the story is when he talks about how his old principle used to go around shaking all the parents hands and when he saw a parent that was a little bit over weight or messy he would put on a fake smile shake their hand quikly then go have a 20 minute conversation with one of the other parents. If someone asked me what I thought it ment to be true to yourself i would tell them that you should always follow your dreams no matter what other people think and you should always tell people how you feel and dont do stuff just because people say its cool. Also think about the things that are most important to you in your life and always put them first. For me that would be my family and friends I would do anything for them and always put them first.