To me it has been immensely helpful to work with my own projections. As I've realised how much of my own inner world I project onto others, I've become more forgiving and unaffected by other people's projecting onto me.

There are many types of therapy that works with projections: https://en.wikipedia.org/wiki/Psychological_projection

Personally, i've done the work through ManKind Project, a non-profit for men's work.