yes it is successful to invest and really good for investing.
You're full of shit, not that you're a real person anyway.
There is not one single legitimate option to get 0.1% annual appreciation on Bitcoin in this galaxy.
Using what is known as deduction this tells me that an operation that promises to double your Bitcoin is not legitimate.
9 times out of 10 though newbies won't listen and will throw their money away for the sake of moronic greed so best of luck with your loss.