That is a good feeling, but not a good indication on how the previous day went. The Mind & Muscle connection is what most people fail to accomplish, everybody is more concerned with the amount of weight they are moving. Ego lifters. Someone close to me long ago told me, "check your ego in at the door...," especially because I lift alone.
I don't know what kind of training you do, but usually after a good 8-10 weeks I need a good week off from the gym to just rest and recover. But more important, eat whatever I want lol. I started foam rolling a lot to. I mostly do it on heavy squat and dead days. Helps a lot in my experience. I try to roll my hammy's out daily, just helps me feel and move better in and out of the gym.