Part 1 who matters to us -- Modern friendship is wild -- Six hard truths about modern friendship -- Why you feel like you have both 100 friends and zero friends -- Why we crave friendships even though people are baffling -- Bathtubs, jacuzzis, and swimming pools, oh my! -- Why we have the friends we do -- Can we trust our intuition when picking friends? -- Happy people do this one thing instinctively -- Why friendships fail -- Part 2 mattering to others -- Desire, diligence, and delight -- The secret to getting a hell yes! Every time -- Initiators, rise up! -- The unbeatable power of a flexible mindset -- How to say no without crumpling into a ball of self-hatred -- Part 3 practicing wholehearted friendship -- Let's (actually) get together sometime -- Expressing appreciation and support the right way -- How to be caring and curious -- Taming your inner Yoda -- 14-day friendship cleanse.