The one thing with stress is, you've got to keep your focus on what you can do, not what happened to you.

When you're making a critical decision, you have to understand how it's going to be interpreted from all points of view. Not just your point of view, not just the person you're talking to, but the people that aren't in the room. Everybody else.

As a company grows, communication becomes its biggest challenge.

If you have never done the job, how do you know what to want?

Planning is valuable, tho the plan is usually useless.

Generally the reason they fail in the job is, you made some mistake in the hiring process in that you didn't match... them to the needs of your company accurately enough. That's the #1 reason this fails. And that's generally a good place to start: Here's where we are and here's what I didn't recognize about us and about you when I made the decision, and now it is what it is.

Groupon looked like a very high valuation, but any investment in a great company at any stage is almost always a good investment.