“You can make do without a cofounder. You can survive for a while without a team. But you can’t make it without a mentor. Find at least one person who you deeply trust and who believes in you. Not a life coach or an executive leadership consultant, not an agency, not someone who’s read a lot of case studies and is ready to charge you by the hour. And not your parents—they love you too much to be impartial. Find an operational, smart, useful mentor who has done it before, who likes you and wants to help. You will need to lean on them when you start a company. Or even when you launch a project within a big company.”