This ^
I agree being always a natty.
I read as much as possible and made lots of changes, periodization etc etc, biggest error I made was-once reached my maximum muscle mass-going all out with heavy duty program.
Lost totally the muscle maturity look and started getting injured.
From my experience more or less after 3/4 years you reach the maximum muscle mass you can achieve, basically you just go on training because you love it so much