I shortly mentioned already that many people quickly start comparing when they are doing something in a group like working out with several people. Of course a lot of sports are about competition, running faster, jumping higher and throwing more far. In these sports you will have difficulties if you try not to think in a competitive way. And then for those who have problems with their low self-esteem the chances that this will not be much fun to them are high. A person who thinks of himself that everybody is laughing about him if he is not the first to reach the goal will only be fine if he really reaches the goal first.
So if we go back to the example of your daily workout in a group I would suggest you to keep the thoughts of comparison under control. Do something together, a game for example or also yoga exercises together. And again: just enjoy! In general it doesn’t make sense to compare yourself with anyone. You are unique and you are you. If you all the time look at other people’s lives and see what they are doing in comparison to what you are doing, you will not be happy. If you don’t reach where they are reaching you feel bad and if you feel good for a while because you achieved something better than the others, then how will you feel when they also get there? Let’s say you have just been promoted and are now in a very good post with good reputation. Now you think that you are in this way much better than your friends but a year later one of your friends gets a much better job. Now what?
If you keep on comparing you will be unhappy your whole life long, striving for more, wanting something better than you have. Be happy, look at your life and realize that it is great!