Doing things differently, doing things in a new way is hard. The hardest part is that you have to change how you think about whatever it is you are going to do. This is usually called thinking outside the box. Thinking without prerequisites about the project at hand.
This is why limitations are so good. Because they force a new set of rules on the product, however small or large that difference may be, that change the direction in which you take the product.
Are you stuck with some design or problem? Try giving yourself a strange rule to follow. Or find the rules and limitations of your work before you try to create it. Working without limitation just leads you in circles.