You, my friend have some flawed logic. How does 80% of 100 equal 800 ? What kind of math did you learn at school?
Binary options, in my understanding, requires going by a concrete strategy, and not breaking the boundaries of it.
For instance, set yourself a limit never to trade more than 5% of your capital on a single trade.
Also limit yourself to only 2-3 trades a day, and be consistent.
Another tip is that even if your account is overflowing with winning trades, and you are in a high profit - be careful to upscale your risk!!! People tend to think - "Hey, I won a few times, this is easy!! Why don't I just put my whole capital!" This is how traders lose their socks.
They start with small trades, $20-$50 and then try their luck with $500 and then $1,000 per trade if they are on a winning streak.
Don't let your emotions control you, and it's possible to profit a lot from Binary options if done correctly and with self-discipline.