What do you mean by Ability to think out of box?

Thinking "outside the box" refers to one's ability to see a problem or situation from a different perspective, to come up with a new way of doing something. "Inside the box" might refer to being constrained by the traditional way of doing something or a conventional way of handling a situtaion. "Outside the box" would then refer to breaking free from tradition and seing a new and creative way to address a problem.