The key is definitely to stop caring about what other people are doing with their lives. I think that because we are thought from such young ages to be competitive and to accomplish as much as we can starting school, we develop this sense of insecurity and need to always be in touch with how others are managing their lives, how many possessions they have etc. But like you've said in this post, we need to stop that immediately and realise that the only thing that should hold such value to us is ... our own person. Plus, as individuals we are on this earth to figure out our purpose and to better ourslves, other people should be like a bonus, a joy in this world for us to not burnout and to experience love, not to produce us the pain of always competing with them.
Great topic for discussion and article!