This is not just the wearing off of physical attraction.
Replace one of your regular TV shows with work on a life goal. Apply the same level of discipline. Do not miss the start time and stay with it to the very end. Turn down all invitations, phone calls etc. so that you do not miss “your show.”
If you keep to the task with the same regularity and fervor as with the TV show you will be amazed at the success that you will achieve in achieving one of your life goals.