calm panic breezy tense chilled manic and so on

I'm feeling so weird right now...

one moment i'm chilled, and this lasts for a while, and feels good

the next i'm tense, anxious and worried, and this lasts for a while, and feels... well... tense

and then i return.

one moment i'm happy, nay joyous, for my friends who have recently hooked up

the next i'm aching

and then i return.

and frankly i can't make head or tail of it