It's the nature of the beast. I don't have bipolar, but I can understand through people I've known with the disorder how awesome the highs CAN be and how painful the lows are. Every single one of them does struggle a little on medication because the highs can be super gratifying. But it just shows why medication is so essential. Think about being able to have a really good day without feeling like you're losing your mind and then being able to have a bad day that doesn't make you feel like a dried up raisin. Being able to lessen how high the highs get can also help keep the lows from becoming unmanageable. It's really tough, but the two phases really do go hand in hand. There are several different medications that can really help even you out so that you start feeling a little more normal and can help you maintain the state of mind needed to not make any drastic life changes (like breaking off a perfectly good relationship that you had been happy with).