if you plan to use $10K trading, then sim trade with $10K til you make $10K, then go live
Then you will have all the evidence you need that you can make money trading
Or stay in sim til you make $XX,XXX money. Then you know the depth of your strategy
The first part of your advice is correct, SimpleMeLike -- but the second part is somewhat not as much.
Sim/studying the market/paper trading in your mind... is only a basic requirement to ensure your skill is viable.
Anything beyond that point...is Welcome to the School of Hard Knocks.
You can only basic train a soldier for so much...before he has to be thrown into the battlefield -- for better or worse.
Happy New Year 2018, SimpleMeLike.