Entrepreneurs are lone wolves by nature. Even those who successfully lead great teams tend to work the longest hours and make the greatest sacrifices for their companies. That resolute independence is essential to bring projects to fulfillment, but when it comes to healthy living and personal growth, it is less beneficial.

Gallup’s research found that 45 percent of entrepreneurs report feeling stressed, a slightly higher rate than that of the average worker. Feelings of loneliness and isolation can worsen the stress brought on by already substantial workloads.

Despite the risks, entrepreneurs do what it takes to succeed. General Electric CEO Jeffrey Immelt famously worked 100-hour weeks for more than 20 years. Starbucks CEO Howard Schultz l...