The desktop format is perfect for the "tree" navigation which helps you to categorize your goals using folders. Please note that you can create nested folders to make your project structure more convenient, (e.g. Business -> Travel, Business -> Partnerships, etc.):
Here is an example of a set of goals related to public speaking. Note that the Mac app shows more information about each goal than a mobile app:
Each goal, with a corresponding task/action list, forms a Project. Generally it's a good idea to write down every complex task as a project and divide it into simple one-step actions:
By setting start and due dates you can define your daily schedule and manage it with the convenient Daily Plan menu:
If you're a hardcore GTD fan you can use context lists to organize your tasks not only by goals, but also in different ways, like places, tools, people, etc.
And just in case you need to quickly capture a note, idea or task there is a special place for that: Chaos Box. It lets your save all your incoming records so that you can process them later: