AGO - Aims, Goals, Objectives
You can do something out of habit, because everyone else is doing it, or as a reaction to a situation.
These are all 'because' reasons.
But there are times when you do something 'in order to' achieve some purpose of objective.
It can help your thinking if you know exactly what you are trying to achieve.
It can also help you to understand other people's thinking if you can see their objectives.
In certain situations the words 'aims' and 'goals' are more appropriate than objectives, but the meaning is the same.