Never worked for a failing startup, huh? Okay sure, you might be able to find a job after it, but when you are trying to keep it going and every decision you make could make or break the company, it's hard not to feel the stress, especially if you really enjoy what you're doing.

Also being one of four people that helped a parent company lose a couple million dollars doesn't feel great either.

Or work for a large company where if you screw up it could result in all of your major clients terminating their contracts and the parent corporation deciding to close an entire department resulting in hundreds of people losing their jobs. That's the situation I'm in right now. Thankfully I'm not TOO high on that totem pole that I feel all the stress in the world, and we're probably only delaying the inevitable in the long run, but it is very difficult to relax.