Fortunately, lighting a vaulted ceiling is surprisingly easy once you know a few basic tips and tricks.
Skylights
If you've got the budget for them, consider installing a skylight or two. Keep in mind, a skylight does not have to be a large rectangular or square window. You can also consider installing tubular skylights, which are smaller in scale but equally effective when you install them in multiples. Furthermore, tubular skylights are significantly less expensive than their more prevalent larger counterparts.