A clear aim or target that a person sets for their life is generally called a goal.
• If it’s broad and long-term, people often refer to it as a life goal or personal vision.
• When it’s more structured and tied to measurable outcomes, it’s called an objective.
• In motivational or self-development contexts, it’s sometimes described as a purpose or mission, since it reflects deeper meaning behind the target.
So, the simplest word is goal, but depending on how formal or aspirational you want to sound, objective, vision, or purpose might fit better
