When i first looked at the market of bitcoin , truly i didn't believe that it could rise to this extent in such a short period of time and i regret that. When i bought my first bitcoins the market price was only 700$ and at that time i only imagined that when it would reach around 1500 to 2000$ i will withdraw but when i saw the rising of the bitcoin i didn't do that . But , i still regret that i didn't bought enough of them at that time.