This thread is all over the place! So let's set some parameters.
What is "good money"? What is "successful"? If you live in New York City and own a home in New Jersey, as I do, then "successful" is (bare minimum) 100K a year. 200K is comfortable.
Now what if you live in Europe where the average inome is $200 euroes a week? Or in Alabama where the average yearly income is $19,000. What is "successful" to that person?
Let's say you own a company (as I do). What is "successful"? Compared to Pornhub? Well that's like comparing any retail business to Wal-Mart.
My definition of success: you can pay ALL your bills, save/invest money for retirement, work how & when you want. Therefore: I am crushing it.