...a friend in high school told me once, "you need to take responsibility for your emotional state," and I know that this is true; when you feel shitty, it's useless to hope that someone or something else will take the shittiness away.
But, but, but. Sometimes someone else can make my whole day. Sometimes there's a little cerebral interaction that happens, whether it's telling a well-received joke, or sharing a communicative look, that helps revalidate my breathing of air. I feel that I can hear better, speak clearer, act truer. Sometimes the spell lasts for days, a feeling of buoyancy, a dizzy sense of hope that is every bit as imaginary as the episodes of despair, so quickly substituted.