Prevention is better than cure

Possible interpretation: It's better to take care that a problem does not happen than to have to solve the problem afterwards. It's easier to stop something bad from happening in the first place than to fix the damage after it has happened.

Note: prevention (noun) = the act of stopping something from happening | cure (noun) = something that solves an illness or problem | This proverb is often used in relation to health and disease. A variation is: "An ounce of prevention is worth a pound of cure."