Tip from me I keep forgetting: if you've got bad lighting you can't fix and you're using a laptop, turn your screen brightness up to full and it'll help a lot by illuminating your face.
Yep. I'm almost the opposite. I have a good lighting setup and a big dual monitor setup. So if I'm trying to optimize lighting for, say, a video, I'll actually make my second monitor fairly dark (no big docs with white backgrounds) so my face isn't too "hot."