I empathize. During periods of relative stability, I review or edit my self-care journal. It contains instructions and schedules for times when I am especially sick and incapable of constructive thought and action. Hence, I at least have an idea of the very basics that I'll need during a time of crisis, e.g. sleep, the right food, medication, fresh air, a walk, etc. These things can really help and are often overlooked during a breakdown.

Here are some things that are in my book:

1) Three trusted people I can call. Even if they can't help me concretely, they i) will coax me into calling a therapist or psychiatrist (or finding a new one), ii) make sure that I'm not binge-spending, binge-drinking, etc.
2) Numbers for my therapist, psychiatrist, and a suicide help hotline.
3) Tips for dealing with hypomania so that it doesn't spiral into actual mania or a psychotic break.
4) Small steps to get myself moving when I'm depressed. As some people say, depression can't hit a moving target. Every little step helps.
5) Foods to avoid & foods to eat
6) A list of medications, doses, and side effects
7) Passages and notes that console me and give me hope
8) Checklist of materials to compile before meeting with a psychiatrist or doctor (since I'm really scattered when I'm sick).
9) Routines to simplify my life so that I can at least focus on taking care of the basics, and build up from there.
10) Three achievable short-term goals for my life. Sometimes I'll brainstorm steps that I can take to achieve them. This gives me something to look forward to, and be happy about. I try not to be hard on myself if I can't achieve them without stumbling
11) Three long-term goals
12) Lastly, I tell myself to reach out to someone -- anyone -- no matter how miserable I'm feeling, and to be kind or helpful to them in some way. This could be as small a thing as holding a door open, or writing a supportive message to someone on an online forum. It always makes me feel happier.

Good luck, and feel free to talk to me anytime.