In any city, in any country, go to any mental institution or halfway house in you can get yourself to. Go to the receptionist and ask to see "The Holder Of Wrath". The receptionist will pick up the phone, dial a number, and say "They're here.". A few more seconds will pass and she will direct you to a flight of stairs leading down. You may descend as far as you like; every floor leads to the same place.
When you enter the doorway leading to the floor of your choice, you will see only a single light, at the very end of a long hallway. Walk towards the light, but whatever you do, do not walk to the end of the hallway. Feel along the walls until you reach the third door on the left. Do not enter any other room, as you will not leave should you do so. Once you reach the third door on the left, enter this room, and hold both your arms outstretched, palms forwards. The one person who makes you the most angry will appear before you. You must embrace them in a loving hug and whisper into their ear "I feel nothing but peace." At this point, they will hand you a small vial of blood.
The blood in the vial is object 528 of 538. Use it when they find you.