Starting a business isn't for everyone, and it's not what you should do if you aren't sure what else to do. It requires thick skin and the willingness to carry a great deal of stress, sometimes alone. It's more often a life of failure than a life of success, and the majority of successes came after a long road of disappointment, and often shame.

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.

It's fantastic to be known as a company that responds quickly to users, shares great resources and friendly banter with them over Twitter, and forges relationships on Pinterest, Facebook, and every other social media site out there.

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

The best cover letters I've read are from people who have a passion for my company, and can make that passion come to life on a page. The letters that make me say, 'Yes! This person really gets it.' Because, at the end of the day, I want to hire people who already get it. Most hiring managers do.

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.