If you feel like you're losing it, don't try to go it alone. Here are a few places to look for help and support:
The Academy of Organizational and Occupational Psychiatry can steer you to mental-health professionals in your area who specialize in serving entrepreneurs.
The Young Entrepreneurs Organization has support groups for business owners under 40 with $1 million in sales. For the older set: The Young Presidents, www.ypo.org.
Let's Talk Business Network, open to all, aims to break the isolation of running a business. Groups of like-minded entrepreneurs meet solely for support, advice, and community.