The gurmukh faces the Guru, and so lives in remembrance of the Name, humility and service. The manmukh faces his own mind and is driven by desire, anger, greed, attachment and pride. Sikh teaching frames the spiritual life as the turn from the one orientation to the other, by grace and effort.
Gurmukh
One turned toward the Guru, living by the Word rather than the self; opposite of manmukh.
Also: Gurmukh, manmukh