Unless you choose to enter a competition where there are winners and losers, others do not have to lose for you to win. You can win by living your best life and cooperating with others who are living theirs.
https://yourmeaninginlife.com/blog/life-is-not-a-zero-sum-game
You can always find a reason to complain, and you can always find a reason to be grateful. The former will lead to a miserable life; the latter will lead to a more pleasant life.
https://yourmeaninginlife.com/blog/it-will-always-be-something
There are many misconceptions about how important growth is to your life, from what kinds of growth are possible, whose growth is meaningful, and how growth is meaningful even in the face of endings and death.
https://yourmeaninginlife.com/blog/misconceptions-about-growth-oriented-meaning