While Erik Z. Severinghaus has been to the top of the physical world (literally climbing Everest) and the business world (exiting companies for hundreds of millions of dollars), what has defined his journey is not the successes but rather the hard times of loneliness and self-doubt that nearly cost him his accomplishments and his life. Every entrepreneur experiences these crippling but unspoken challenges. Not coincidentally, entrepreneurs have three times the rate of addiction and twice the rate of suicide of the general population.This guidebook passes along the lessons needed in those dark times, with the hope that it will help every entrepreneur who is going through this struggle understand their journey and build the mental resiliency to succeed.