Main factor for long-term financial wellbeing of a young person

Person 1: For a young person who is starting, do you know what the main factor is for long-term financial wellbeing?

Person 2: Sound investing decisions? or prudent spending habits?

Person 1: Those are important! However, the main factor is to have a well-paying job.

Person 2: Got it! I will strive hard to acquire the necessary skills for a job with good pay. After all, I can delegate my investing tasks to an expert.