I  Didn’t had the chance to buy some bitcoins last december 2017 and with its value now, i guess it is better that i wasn’t able to because if i did, i would have lost most of my investment if i planned to withdraw them within a year.  Investing in bitcoin truly works when you do it in a long term regardless if you got it at a low value or during its ath. Long term investmwnt will definitly allow you to gain some from your investment.