It is definitely making your mind believe that is where you need to be. Your mind and body are weak as are mine. But our spirit is strong. Sometimes it is ok to take a day and say- I need a day to refresh my spirit. It is not where it needs to be. If it is necessary to take one half day or a day to refresh your spirit then do it. Admitting we are weak is not a bad thing. We must do what is best for us. Lessons and work are what is best. But even the strongest of warriors have rest and downtime.