I read this in a book I....

The line which says 'doorway to success is entered through the hallway of failure' is similar to 'when a door closes, windows open.' We just don't have any idea as to when we will be doing good in this life. Only God knows. Most of those who had been successful in their chosen fields of endeavor, thought that the first step they did was just like the ones they did before it. They are in for the surprise of their lives, when after a seeming failure, tables are turned in their favor.

it is beautiful, and true often the door way of success is entered through the hallway of failure, you just have to remember to open the doors and not just walk by with your hand in your pocket and your head down so low that you don't see the doorway.