I have overhead lighting, plus 3 large windows on two different walls, so that is a big plus.
But as charlottequilts mentioned, shadows tend to bother me as well, so I also use pole lamps that I can move and adjust as I need them. I have pole lamps that each have 3 adjustable lights on them and have enough for each of my stations so I don't have to move them around the room, just move and/or adjust them a few inches or feet at each station. I pretty much have them set up now that I just need to adjust the aim of the adjustable lights once in a while. Each of the adjustable lights on the poles, can also be turned on separately as well. I can turn one/two/or all three lights on the pole on as needed.