"Nothing great was ever achieved without enthusiasm."
Ralph Waldo Emerson
Plateau. The dreaded fitness word that you do not want to hear, let alone experience. Especially when you are working so hard and not seeing results. Plateaus are common and natural. Sooner or later everyone hits a plateau. If you are no longer seeing results you have likely reached a plateau.
A plateau happens when your body adjusts to the stresses applied to it and the exercies that you were doing become easier. You are no longer challenged.
To work through a plateau change your routine and incorporate the principles of progression, overload and adaption to your workout.

Committing to fitness is a life long commitment.