I don't know about the disability but I'm sure if it prevents you from working that it's possible.
Bipolar runs in my family and while I've never officially been diagnosed with it, my doctor has considered it possible. My granddad on my mom's side was diagnosed with schizophrenia when he was in his 20s or 30s, but we are of the opinion that it was actually bipolar disorder which wasn't a well known disorder back then. My uncle(mom's bro) has been diagnosed with bipolar though.
Some thoughts from me just from what I've noticed about myself and being around my uncle.
1. Take your meds correctly, it will make a difference.
2. Try not to overindulge in any alcohol too much as this seems to bring on episodes and when alcohol is involved, they are BAD! (at least in my family)
3. Make time for you! Make sure to have you time where you cannot be disturbed by kids, husband, whoever. Whether it's a night or day out with the girls, a trip alone to have a mani/pedi or massage, or just you in a room alone gathering your thoughts. That alone time is crucial to keeping the racing thoughts in your mind in order and keep them from exploding.
4. I can say try not to stress out, but ya know that one's just too hard for anyone. What I will say is try not to take everything too seriously. Too often, I find myself stressing out to the point of feeling like I'm going crazy over something so trivial it's not even worth my time. If something gets you going, stop, take deep breaths, and count to 10. If needed, invoke #3, go into a room alone and just take time to relax and gather your thoughts. I have a tendency, as does my uncle, to overreact to things.
5. Therapy CAN help. If you can afford and find a good therapist, or even just a really good supportive and optimistic friend or a preacher from church who doesn't mind you venting to them, use that. Someone outside of the family who will not be quite as personally involved.
6. Keep a journal and make sure that if your family knows about it, they respect your privacy and do not go digging for it. Journals can be great places to vent. It doesn't have to be grammatically correct, just write down whatever you're feeling. This is good also if you have that therapist/friend/preacher but cannot contact them because of a weekend/holiday/etc. It will help keep your thoughts in order.
The biggest thing is keeping things in order, but also learning to be prepared for the possibility that things will NOT always go as planned. I find that if I keep my thoughts and my life in order, I don't get the feeling that I'm going to just explode as often. It's hard, but making sure I have routines helps, and a good support system is a HUGE factor. My husband is always there for me to talk to, and that helps me more than anything.
Feel free to contact me if you'd like. I'd be happy to listen if you need to talk. :)