I would question the validity of "success" that many claim to have achieved. Unless we get to see financial statements...I don't believe it. Its very easy to APPEAR to be what poor/middle class folk would call successful. The financials do not lie. Debt(car's, homes, jewelry) is making many "famous" people we know...very broke and nothing to aspire to. Fu#k Fame. Keep track of your own financials...diversify and build businesses on the side. You'll bypass music income in no time. You'll own the club where the FAMOUS but broke artist in your city hangs out at.
Fame is actually EASY to get. The key is PERSISTENCE..that's it. You can suck balls at what you do but eventually..overtime..you will be accepted into the fray as someone with experience. I cite Lil B whenever an I'm discussing marketing with a new artist. That guy has a new video out damn near every 3-4 days or at minimum once a week...that's HUSTLE. Same for the top artist in my city. He does booty/gangster music that the local crowd eats up and he's content with the $200,000 a year they pay for his shows and merchandising. He's been at it for 10 years and absorbs new fans daily. He drops mixtape after mixtape...no albums in 10 years.
There is no knockout blow. You have to stay serving up new products and picking up new..paying fans. Thank god its the digi/internet era. Now you can release songs/merchandise whenever you want as often as you want...who's ready to get in the trenches to hustle for it?