Hypo/mania (I write it that way because the jury's still out as to whether I suffer from mania or just really severe hypomanic episodes) for me is like having all the TV channels on in my head. My thoughts race around like squirrels in a cage, I can't concentrate on any one thing longer than a bird can stay on one tree branch, and can't sit still without tapping a foot, shaking a leg, drumming my fingers etc. Nobody does things better than me, and I get irrationally upset when someone tries to point out this erroneous thinking. I have no insight that anything is wrong. I scream at people in traffic and flip them the bird. I drive too fast, work too fast, play too hard, and am too hard on others. I can't eat, can't sleep, don't give a crap. I spend money I don't have on things I don't need. And at the same time, I feel AWESOME and can't understand for the life of me why other people want me to be unhappy!

That's hypo/mania for me. It usually lasts a few days to a couple of weeks, sometimes longer depending on the time of year (summer is my favorite time of year). It's unusual to have moods shift on a daily basis or even multiple times in a single day, but there IS a variation of bipolar called 'ultradian' cycling, in which patients experience almost constant mood changes. I can't imagine how exhausting that must be, and I feel awful for you if that's what you're dealing with, OP.