After founding one company on my own, and co-founding several others with teams, I've written and spoken extensively on this topic - it's an under-recognized risk and challenge of entrepreneurship. You can read one of my more popular articles at http://lp.co/perspective, but I'll summarize it here...

Entrepreneurship can be a very lonely endeavor. Even when you have others on your team, no one else is in quite the same "boat" that you are.

Looking to other entrepreneurs for support can be deceptive. Most entrepreneurs are always "on" - showing only the best side of their business - and it's easy to understand why. As an entrepreneur, you're constantly selling yourself and your company to potential customers, employees, and investors. As a result, you compare yourself with others who are only showing their best side (and only sharing the good news), while you know that your own pursuit is a daily struggle.

Raising money (if you are going that route) is an exercise in perpetual rejection. It's a real test of your self confidence to be told over and over why your idea won't work and isn't worth an investment. If you're not raising money, you may deal with this same challenge when trying to find your initial customers or employees.

I've found three primary ways to counteract these forces and stabilize my own perspective:

1. Find some peer entrepreneurs with whom you can build some truly deep and transparent relationships, where the masks come off. Share your insecurities and vulnerabilities with them, and allow them to do the same.

2. Find mentors, advisors, and coaches who have experienced the same ups-and-downs you are facing. Listen to their stories, soak up their wisdom, and most of all, realize and remind yourself that they survived it, and so can you.

3. Recalibrate your perspective by taking time off to help others who are less fortunate than you are. Volunteer with an organization that supports a cause that you care about. The side effect of focusing on others is that you will be reminded that the challenges you are facing are not the worst problems in the world.