My first company failed completely. And it failed at about ten months old. I had about 12 months of savings, so when it failed I was thinking: 'Do I go back to work?' And at that point I believed so deeply in what I was doing that I couldn't imagine anything else other than trying to make this business work.

I am a big advocate for having an open discussion about team norms and preferences. At The Muse, some of us like to start working at 7:30 A.M. Others focus best from 10 P.M. to 2 A.M. Create a culture where it's acceptable not to be working when someone else is working.

Sure, you're an intelligent and highly capable individual, and you are learning a lot on the fly as you build your company. But you also need to come to terms with the fact that there are things you have chosen not to be an expert in.

One of the top causes of startup death - right after cofounder problems - is building something no one wants.

We knew when we started the Daily Muse, we wanted a recruiting-focused business model rather than an advertising-focused one. We felt like publishers were being forced to go to more and more extreme lengths to monetize through advertising.

Sure, it's fun to chat with people with interesting backgrounds who seem to have a passion for your company. But a job interview is not a friendly chat. You need to determine whether candidates, can they really do the job. So ask them to prove it.

Get your product in front of actual, living, breathing strangers. Your college roommate's approval does not mean there's market demand.