Like anything in life, self-improvement can be used either as a tool or a weapon. Self-improvement is one of those things that we can very sneakily turn into a never ending ending cycle of "becoming better."
While I do believe that personal growth and change are inevitable parts of life, pursuing them from a place of shame and self-judgment becomes a game we can't win, and that's because we can't shame ourselves into feeling good about ourselves. Feeling good about ourselves comes from a sense of safety and acceptance, not judgment and shame.
Check in with yourself: Does desire for self-improvement and personal growth come from a place of excitement and self-honoring, or am I pursuing it because I don't feel worthy & enough as I am?