Go to your settings page and paste the following in the "Profile Picture URL" field:
https://steemitimages.com/DQmQCEA7eXwV9ZBrwWddHJKvVieMCKQk7i3kxoTxF9iFTEb/image.png
Then just hit "Update." Done!
For the record, I grabbed that URL from this very post! So, as long as the server hosting Steemit's images stays up, so will your profile picture!
Thank you very much for the help! That has done the trick!