" Say your husband wants to start a business creating topiary sculptures for clients. You think the idea is bonkers, but you admire his passion, so it seems cruel to veto it. Instead, set a tripwire. Okay, dear, let’s give the topiary-sculpture business a shot, but can we agree that we won’t invest more than $10,000 of our savings in it? Alternatively, you might say: Go for it, but if you don’t have a paying customer within three months, let’s talk seriously about Plan B. "

― Chip Heath , Decisive: How to Make Better Choices in Life and Work