Work harder on yourself, than you do on your job. If you work hard on your job, you can make a living which is fine, if you work hard on yourself you can make more financially. Here is the big challenge, working hard on yourself, temperament, personality, mindset and culture means you as an individual are responsible for growing and playing the adult archetype. Living societal expectations without any sort of self development and growth keeps you reliant on everyone else, which is the child archetype.
Time cannot be managed, there are 24 hours in a day. What can be manged are activities.