Lazy can actually be an awesome way to grow.
I think it was Paul Anderson... he used to say if he wasn't lifting, he was resting. Why stand when one can sit? Why sit when one can lie down?
If you want to gain muscle, lift, rest, eat... and nothing else tiring.
If you can keep your laziness outside the gym, it can be an asset.
"Morning, Putski eats it, noon, Putski eats it, night, Putski eats it. Putski loves!"