I can relate also.

I had a great job that paid me very well, the work was great and I liked the people I worked with. The hypomanic side of me got me a long contract, recognition from the director of a half a billion pound firm for my efforts and a future that looked promising. I was focused. At the same time I wasn't sleeping, I was drinking heavily and no amount of sleeping pills were working. In hindsight, I needed meds back then.

And then the other side of bipolar took it all away in the space of a couple of months. I lost my job and it's hit me hard ever since. I've never recovered from it and years later it still breaks me.

Now I find myself struggling to stay in work.