How I keep track of my most important work (The Three Things)

I follow GTD pretty religiously, but one of its side effects for me is that I find it easy to lose focus of the bigger things I should be getting done in favor of the mass of small things that are not as important. The Three Things is far from an original idea, but it's something I have started doing that helped me, so I wanted to share here.

https://youtu.be/HDPWjISUwH4