you are clueless. Been doing this for a living for much longer than 10 years. Not just supporting myself but my mom, helping my sister, etc. Not just helping a little, mortgages and everything included.
20% a year at this point is a joke for me. Especially building up from scratch with a small account. 2,000%? Easily attainable, not on a prayer either, every day grinding out gains trade after trade. You hopefully understand how money exponentially builds. With 500k account it'd be tough to get those %s because it'd be hard moving larger sums efficiently through quick trades and there would be no need to use leverage.
BTW thanks for lessons non trader. Got to love someone telling you can't do something when you done it your whole life.