Call a friend . Take a shower. Disrupt the relentless negative thinking that many people with low self-esteem engage in. Try not to compare yourself with others. Accept once and for all that no matter who you are, there will always be people who are prettier, more intelligent, more handsome, taller, shorter, thinner, fatter, or better dressed.
Life is too short for compulsive comparing.
Make a deal with yourself. Every time you catch yourself unfavorably comparing yourself with others, you have to give equal time in your mind to appreciating something about yourself. When you are worrying or excessively thinking about your inadequacies, stop and focus on the physical competence you feel while playing your sport or walking, biking or doing a craft. Spend time each day consciously focusing on things outside yourself such as current events, history, philosophy, social problems, environmental - the beautiful intricacies of nature. Engage in positive self-talk.