In the financial world, only 20% are successors.
They are top-level employee, high income self-employed, successful businessman and successful investor.
How much you can earn, it depends on how much risk you can take and the plan you have.
Low Risk = Low Reward / High Risk = High Reward
Degree of Risk / Reward = Amount Losses / Profits in a given period.
There is a law that states that your returns are directly proportional to the risk you take.
Investment ( High Risk )
Business ( Above Average Risk )
Self-Employed ( Average Risk )
Employed ( Low Risk )
Risk for being employed always come late, either no increment on salary, voluntary separation scheme or not getting promoted.