This tends to hit us when we focus on just the positives of others lives, and focus on the things they have that we are missing. We want that part of their lives we don’t have. We see the grass greener on their side. But is it really?
We forget that others have their drawbacks as well. Everything in life has its pros and cons. All of us as individuals are blessed with things others don’t have. If you dig deeper. You realize you have something they don’t have. You recognize that their life isn’t all that great as a whole. It is just that aspect of comparison/jealousy that seems better. Things in life isn’t all great or all bad. There are good and bad aspects.
Reflect and appreciate what you do have. Learn from the things you don’t have, and if you really want it, work for it, don’t dwell, and make a change. Your life has just as much value as any other individual. You just got to believe it, and take action. We all have value. We all have positive aspects to our lives. We also all have downfalls and drawbacks. Rather than just focusing on yours and making comparisons. Remember that other people’s lives isn’t as perfect as you think, and that they have drawbacks and insecurities as well. Remind yourself that you have things to be proud of, and appreciative of as well.
Psychology of Mindfulness 