It's not unlike how the Earth rotates on its axis, rotates around the sun, rotates with the solar system within the galaxy, which is part of the Milky Way, which is part of several larger movements we don't have names for. Yet all the while, we feel as though we're standing still. Each of the activities in the columns are themselves processes with steps within them. If you're familiar with one, you can use it to help you learn another. That is, you should be building your design on other people's good work rather than coming up with your own design ideas.
Borrowing is important for three distinct reasons.
First, given the level of quality of the best user interfaces today, it's unlikely that ideas you come up with will be as good as the best ideas you could borrow. Second, there's a good chance, if you borrow from the right sources, that many of your users will already understand interface features that you borrow, whereas they'd have to invest in learning about features you invent. Finally, borrowing can save you tremendous effort in design and implementation and often in maintenance as well. At some point in most projects you'll probably feel that you've done all the copying that you can, and that you've got design problems that really call for new solutions. Make another try at locating a system that does the kind of thing you need.