You can always go deeper, even if you think you’ve already learned a lot about something, specially in any creative endeavour. It becomes neccessary to stop all distractions and to fully listen to a particular voice that calls you from within. This may mean leaving things undone, focusing just on this one thing you’re trying to understand, explore, discover.
This kind of single-minded focus is sharp and powerful. It may not always seem correct to take such a strong stance, but it’s often the only way to get anything done. This is how you develop as a human being, this is how you remain true to yourself, this is how you honor your spirit. The rest can wait, at least for now.