A flat tire stops the car, not the trip.

Setbacks tend to be local. A tire is a problem with one component, and the destination, the reason for going and everyone in the car are all unaffected by it. Treating a delay as a cancellation is how plans die, because the emotional conclusion arrives long before the obstacle demands one.

Next time something breaks mid plan, name out loud what is actually stopped and what is only paused. Fix the small thing, or get help fixing it, and set a new time rather than a new opinion about the whole idea.