My 4 year old wants to read the same picture story book again and again, how do I vary it ??

Does the book that you and your child have been reading belong to a series? If so, perhaps you can get more books from the same series. This way, your child gets to read about the same characters but in different plots and settings. When we were little, my younger brother was crazy about a Berenstein Bear book I brought home after winning a prize in school. He would read it over and over again, or make my mother read it to him repeatedly. Needless to say my mom got bored of it and went out to buy him a few more books from the Berenstein Bears series and subsequently, over the years, he has amassed a pretty impressive collection, which he treasures till today.