Bipolar disorder tends to worsen with age. This alone is sufficient reason to be prepared. I urge you not to limit yourself, that is not my intention here at all, but be realistic regarding what you can expect of yourself and above all, don't blame yourself for those things you've done your best to overcome or deal with in some positive way. When it becomes clear that a situation is unworkable, then don't let wishful thinking prevent you from taking steps toward a new, and possibly more satisfying direction. Writing down your thoughts, feelings, and past experiences will aid in making concrete the reality of where you've been with this illness and where it is you'd like to go.
Writing is a kind of therapy as well, as anyone who has kept a diary or a journal can testify.
But even if you've never written before, try it, it may help you see some things you were only fleetingly aware of, like self-abusive thinking patterns and attitudes that seem to flow with the moodswings. I just mentioned some of the somewhat esoteric benefits of writing your story, now let's talk about keeping a mood chart. Keeping a chart of how your moods cycle and the effects of your various medications throughout the day will serve as a great resource when you need to convince your pdoc that the reason you are or aren't doing well seems related to the medications you are taking. I can't emphasise enough how valuable they can be. This way to get your own downloadable mood chart.