Just a one liner quote, or a positive article, or a divinely inspired message can change your life perspective in a few seconds. I believe your life perspective can change easily, but it takes longer to change your life and implement your new perspective. This is the power of knowledgeable books and applying them.
So, make sure to get a lot of knowledge before you hit the grave, because you don't want to miss out on some great pieces of advice by some of the finest human beings to live on this planet. Take care and stay blessed.