Out of the box thinking means that we look at something with a beginners mind. There is a proverb that says “In the beginner’s mind that are many possibilites. In the expert’s mind there are few.”
There is also a story about a young man in college that was late for class and so when he did the math homework he didn’t know that the extra credit problem was one that no one had been able to solve, and because he didn’t know he couldn’t, he did it.
So approach the challenges in your life with a beginners mind and write down all of the possible solutions on a piece of paper – write down everything that enters into you head, no matter how silly. This is called “no limit thinking” and it gets the creative juices flowing. It’s amazing how many good ideas come from the beginners mind – you might just solve your unsolvable problems!