This will prevent Jan from sending you messages, friend request or from viewing your profile. They will not be notified. Comments on discussion boards from them will be hidden by default.
“Even if things don't unfold the way you expected, don't be disheartened or give up. One who continues to advance will win in the end.”
―
Daisaku Ikeda
“Whatever is destined not to happen will not happen, try as you may. Whatever is destined to happen will happen, do what you may to prevent it. This is certain. The best course, therefore, is to remain silent.”
―
Ramana Maharshi