There's no point in doing 6 days on, 1 day off. I was training PPL with moderate volume 6 days/week while my nutrition was solid, and I saw virtually no results. I lost a little fat over the course of 8-12 months, but that's kind of expected when you're training 12-15 hours every week.
I did all that because I thought frequency>volume. I was trying to train in a more bodybuilder-type fashion, so all I could think about was getting my 100-200 reps for every body part every week. I do still believe that frequency is important, but more is not better. There is a point of diminishing returns. I'm running 5/3/1 now, and one of the rules of that program is to not train more than 2 days in a row. I'm going 2 on, 1 off, and I've never seen results like this out of myself before, and my nutrition hasn't changed since last year. I believe that I would probably have seen better results from my "bodybuilding" if I had taken 2-3 rest days each week.
Want to get stronger? Rest your nervous system and let your muscles repair. Want to get bigger? Same thing. It's not fun to take a rest day. We don't lift weights because we want an excuse to take a few rest days every week. We all want to be in the gym 6-7 days/week, but the difference between people who are experienced (I am not) and see results and the people who aren't and don't usually comes down to their nutrition and rest days.
If you're a workaholic, think of rest days as "growth days." That's really what they are, anyways. You grow outside of the gym while you're sleeping and eating. Let your body catch its breath every couple days and I promise that you'll see better results.