I'm working on it! I tripled my bankroll on PS last sunday. I also turned 0$ into 60 with freerolls on 888... planning to grow them both to 1K in 2019.
I once turned a few hundred bucks into low-mid five figures. It took a lot of work(multitabling/grinding) and discipline. If you really want it you can achieve it.
To my mind, its very hard. You should win a tourment, cause its unreal to turn 5-10$ into some good bankroll. But its harder to hold this bankrool. Because after such wins, you are sure that u r the best and loose this money.
My first and only $10 deposit is currently at just over $70 in my bankroll with nearly $200 withdrawn. This is, however, though taking advantage of challenges and other side bets like sports betting. I'd estimate about 80% of it comes from poker.