There are a set of practices, such as meditation and forgiveness, that are supported by leaders in both the psychology and spirituality communities. For your well-being, they are important to understand regardless of your belief system.
https://yourmeaninginlife.com/blog/where-psychology-and-spirituality-overlap
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