what i do is that i take my capital and play with my profit.
why i take my capital? so that when i'll be unfortune for more games and rolls then i lost it, atleast i did not lost anything because i have taken back my capital. i usually quit when that happens merely because im not letting my emotions to take over me. i may have lost but atleast i havent lost any, cause i still have my capital though.
i don't think that's what he meant. the best way to do is that for example you deposit 1BTC and make some bets and make a little bit of profit. then from that time forward you only make bets with that profit but keep the initial deposit intact. that way if you make profit, that would be profit of profit and if you lose you still have your initial deposit.
It is a good idea and many gamblers use this strategy. But while following this process, our greediness will not allow us to play with only profit. We are already in profit, so we think if we increase our bet size we will get more profit. Many gamblers mindset is like this. So if they made a profit in beginning also finally they will end with the loss.