Have the right people on board. This does not mean hire your friends.
Figuring out the best people for your company is a tricky skill that only gets better with practice. But do not, under any circumstances, assume that just because someone is your friend they will make a good business partner. In fact, this could potentially spur a toxicity on top of whatever else is going on in the life of the company.
Hire new people with relevant skills, and you won’t ever have to worry about souring an old friendship.