Too often we judge our success by others and this can make us feel miserable. Remember to define your own success, don't compare only to your own goals. The key is being true to yourself, true to your values.
Define your success before other's do, this will be much more satisfying.
Also, remember that we are all different and ensure you know how each person in your team defines their own success. Don't assume it is the same as yours....find out by asking, listening and then you can help them create a successful future.