Most of the suffering people experience stems from an inflated sense of self-importance—that the world revolves around them to one degree or another.

The narcissist believes, "I am perfect"; the depressed person believes, "I am useless"; the people-pleaser believes, "I am not good enough." What ties these disparate psychological dysfunctions together is an obsession with the ego.

In terms of actionable advice? I'd say that recognising this tendancy in yourself and others is already quite powerful. Maybe reflect once in a while about what "you" even are.