Ron Schneidermann scraped by on canned soup in a cramped San Francisco apartment. No salary for two years. Less than $15 a day on food. That’s the reality he endured while co-founding Liftopia, a digital marketplace for ski resorts that hit over $60 million in annual revenue. Fortune captured his story in stark detail last week. But the real price wasn’t the soup. Four years into Liftopia, his first daughter arrived. He took two days off. Two. Then, three years later, for his son’s birth, he stretched it to a week—and called that progress. “I look back, I was just able to justify it as ‘that’s just part of the grind’… but you never get that time back,” Schneidermann told Fortune . “That was a mistake.” Startup life glorifies the hustle. Overwork as ambition’s toll. Yet Schneidermann, now 48 and CEO of test-prep startup Acely, sees it differently. He turned Liftopia’s pains into lessons.…