In my youth, I was considered a bright and diligent student.  How did I accomplish this?  I tricked my yetzer hara. 

Other children had great plans at the beginning of the school year for the whole year, but in the end they failed.  I said to myself, “I am going to plan just for today and set a goal for this day only.”

The Satan, not being interested in a single day, left me alone.  The next day, I again just made plans for that day, and so on until the end of the year. 

~ Klausenberger Rebbe zt”l