The process of carefully considering what to do is called deliberation, like your deliberation before making one of the most important decisions in your life.
The noun deliberation comes from the Latin word deliberare, meaning “weigh,” or “consider well.” Whenever a person or group needs to work through all of the possible solutions to a problem, this is deliberation. Something that is deliberate is done on purpose, not by chance or accident — deliberation carries this same spirit, in that it is a carefully thought-out process of making a decision.