Hi. This is my first time posting on here!

Do your scores vary greatly? Mine do, and it's making me feel a little crazy. I have no idea if this happens to other folks, and, if it is preventable, what I can do about it.

My goal is to get a 170, at least. On Tuesday I got a 166- only 4 points away! Then today I scored a 158. What da fooq?

Granted, yes, I was feeling a little more tired today than I did the other day. Does tiredness cause an 8 point fall?! Should I always avoid taking a practice test if I'm not feeling up to it or is it good to sometimes push through (even if it means a lower score)?

I have no friends studying for the LSAT, much less friends who are trying to score 170+. Any advice on how to even out scores or even just confirmation that I'm not nuts would be appreciated.

Thank you!