Since live video is relatively new in social media, remember that, when you use it, almost all of your Friends AND the Public (if you set your video to the Public) will Click on it because:

--They are curious as to what going live looks like.
--They want to see your face, hear your voice, and look at your setting NO MATTER what your topic is.
--They see it as an invitation to invade your privacy.

Sometimes, going live can be the equivalent of allowing people to see you as you are, almost as though you were willingly taking off your clothes off for them to see.

Study the PSYCHOLOGY OF PERCEPTION before deciding to go live.