The problem Jobs faced was that running two companies was brutal.
Looking back on it, he traced his health problems back to those days:
It was rough, really rough, the worst time in my life. I had a young family. I had Pixar.
I would go to work at 7 a.m. and I'd get back at 9 at night, and the kids would be in bed.
And I couldn't speak, I literally couldn't, I was so exhausted. I couldn't speak to Laurene.
All I could do was watch a half hour of TV and vegetate. It got close to killing me.
I was driving up to Pixar and down to Apple in a black Porsche convertible, and I started to get kidney stones.
I would rush to the hospital and the hospital would give me a shot of Demerol in the butt and eventually I would pass it.
Despite the grueling schedule, the more that Jobs immersed himself in Apple,
the more he realized that he would not be able to walk away.