Working part-time won't make you wealthy.

Hard work can increase your salary from three thousand to five thousand,
but it will never reach fifty thousand.
Diligence alone cannot lead to riches.
Wealth is a compensation for knowledge,
not a reward for hard work.
Ancient people already said:
If you want to be rich, open a shop, do business;
Travel the world, venture out, let the horse run free.
Wealth depends on strategy, not just effort,
Profit depends on opportunity, not just labor.
As long as the wealthy don't mess around, they can stay rich for a lifetime.
If the poor don't mess around, they will remain poor for a lifetime.