Comparison of self to others is death.
No comparison is even fair or truly applicable. Your life is completely original. No one else has, nor will, live your unique set of gifts and challenges.
If you see a quality or an achievement of another that you aspire to, then you may be grateful for receiving that example in your life and begin cultivate the energies required to realize it for yourself. But first realize that you already are complete. The journey is complete before it began. Enjoy the ride.