The pressure society places on us to change can be quite intense. Commercials encouraging us to whip ourselves into shape so that we can look like runway supermodels.  Friends goading us to nix our career dreams in favor of safe, lucrative professions -- from law to medicine -- in which we may have zero interest. Co-workers pressuring us to talk more since our quiet disposition puts them ill at ease.  This can all make us quite tempted to fundamentally change our personality and interests -- to curry favor with others, to win their approval. What these ads and individuals don't tell you is that changing who you are is antithetical to a happy life.  If anything, it's a recipe for adverse physical and emotional health outcomes, potentially leading to anything from eating disorders to anxiety or depression. Do realize that marketers and the people in your own life all have an agenda. The former are trying to appeal to your emotions so as to get you to part with your hard-ear...