All the practical music you will ever deal with uses the same two landmarks: tonic and dominant, a.k.a. “Tony and Dominic”. Once you have the domino-tonic relation clear in the ear and named, you find yourself making better sense in both your improv on breaks, reading, chord recognition in unwritten ensemble work, and composition. You can get Tony and Dominic set firm and working for you. My complete sight-singing self-study course, Noshvil Theory/Hear on Sight is available now, spiral bound.
It’s a matter of gutlevel familiarity, or ken. 1) You abstract them as a pair; 2) you use clear, simple tunes for context in which to recognize when they occur; and 3) you take the D-T Relation as your basic example of practical intervals and name them.