Reboot your Virtual or Dedicated Server, please note that this method will require you to have IPMI/BMC or noVNC console access to your VM or Server.
Press ESC during first boot until you have the following screen then select "e" to edit.
Locate the following line that starts with "linux" it will often end with consol=ttyS0
edit this line to remove "ro console=tty1 console-ttyS0" and replace with "rw /init=/bin/bash" and F10 to commit and boot
You will now have root access to use "passwd" to reset you password