With the above, agreed.

However, in light of the "Upon hearing some recordings of myself recently," I do wonder if it has as much to do with the recording as with your playing. Mic placement and sensitivity, pickup balance, mixing and production values may figure into it.

Also, what sort of guitar and what sort of set-up are factors? Many guitars are weak in one part of their range, and may be difficult to compensate for with technique.

Lastly, how about your technique? Is there anything you can do to affect change with your fingernails, stroke approach angle, etc?

Peace, Mooh.