I've found that I have to do it through Ni. Basically pass through all the functions in your stack. Trying to use Se in isolation doesn't work and starts to become like the "unhealthy" process. Tying them together is often where I go into that "flow" state Ni is known for. I am not sure how I came across these things to begin with, however I can give some examples.
I was good at math in school, as long as I could grasp the concepts intuitively. It made all the memorizing and formulas just a small part of the big picture. I know that Ni doms aren't necessarily strong here, but I think it's because they haven't "processed" it in the optimal Ni way and get too hung up in the Se part of it).
More challenging for me, but trying to learn an instrument via Se vs Ni are very different experiences.
Pretty much anything you enjoy and want to improve at
If you are internally-motivated to improve, I believe that an Ni dom is going to be using their Ni by default. If you start wanting to improve and become focused on performance and being good at it, at least in my experience this is where Se starts to dominate and I stop really learning and internalizing the thing I'm working on. Ni and Se together will lead to that "in the moment" experience.
Visualize things before doing them
Kinda goes with the last point. I don't know about you but personally I look like an idiot when I do stuff and my mind isn't really clear about what my body is supposed to be doing. Ni is all about "visions" so visualization is really important for me.