I recorded a video the other day demoing how I navigate OmniFocus using Keyboard Maestro and I thought it'd be good to do the same for GoodTask. Combining Quick Actions with Keyboard Maestro makes moving throughout your tasks super easy in GoodTask. I highly recommend it!
FYI: You will need to configure Quick Actions for many of the Keyboard Maestro macros to function.
If you're interested in setting up a HYPER key in macOS, you can find Brett Terpstra's instructions at his website.