[olegious]

"Non violent communication" by Rosenberg.

Helped me understand how my communication style was hurting the people that I love and stunting my career growth.

[idontwantthis]

Made me understand that anger is almost always a selfish and counterproductive response, because it ensures that I will almost definitely not get what I want. It just satisfies a cruel desire for a moment.

[fogzen]

Second this. It pairs really well with “How to win friends and influence people”. These two books leveled up my interpersonal communication 1000x