What if they change their mind again? Years later, they might have a fleeting thought: "I could have died back then." The point is, the mind changes constantly

What if they change their mind again? Years later, they might have a fleeting thought: "I could have died back then." The point is, the mind changes constantly; it's its nature. What should one do? Personally, I'd rather avoid the rollercoaster of "I'm happy I didn't die" and "I should've died."