IMHO, Train heavy. Kill it. That's all good. But you should do a de load period once in a while. SOme do a higher rep, lighter weight, more sets ect break for a week or two for every 8 or 10 weeks trained real heavy. There's a bunch of ways you could do it. The de load period is a must IMHO to keep connective tissue, joints, tendons ect healthy.
De-loads are ABSOLUTELY necessary. And, IMO, if you are training heavy (as I define heavy) then you would NEED a de-load about every 6-8 weeks or so. Maybe stretching that to 10-12 weeks if you skipped a day here and there.
And OP, don't waste time doing single body part splits 6 fucking days a week if you are going to train balls out heavy. You'll burn out. If you didn't burn out you weren't training heavy enough.
So WTF? I told you to look up the goddamn 5x5 and follow that motherfucker to the T. What's so fucking hard about that? Fuck what you think or feel. It's all about the logbook. If you're beating the logbook every time then you are progressing and you are getting stronger and growing.
I can do a lot of shit and end up sore the next day. I can work on my car, build a fence, dig a ditch, go rock climbing, throw a baseball 500 times. I can get sore in some way doing any of those stupid things, but none of that shit is going to get me huge.
I might get my car running, keep my neighbors dog out of my yard, irrigate my lawn, get to the top of a mountain, and build up a mean curve ball, but I sure as shit ain't gonna get big that way.
I swear it's like ramming my head into a brick wall sometimes trying to help a motherfucker.