I've been lifting for 4 years (I'm currently 19)

I know there are guys who have been lifting for decades here, and I truly respect them.

I reached a point where I consider my physique almost at the top physical condition considering my "standards", and my height (5'9).

I feel like I'm proud but meh, is this all?

I also reached the point where I can eat clean for weeks with no cheat meals, I actually enjoy doing that. It built my discipline incredibly, and I use that discipline for any other task in my life.

But yeah, I feel like It's hard going further than this in terms of physical conditions as a natural. Of course I can get bigger, but considering my height I want to avoid reaching that bull physique. I know at first impact it might sound like a rationalization, but I'd like to maintain a low bf (circa 10%) and personally I find it really hard to maintain that body fat while having muscle fullness. I've always lost quite some strength and fullness when cutting.

People tell me I'm swole every day, and it's a great feeling. But it became so common now that I don't feel like it's as "exciting" as it was in the beginning when I was scrawny as fuck. That was a real challenge then. Now It takes me months to see any small improvement. The more you grow, the harder it is to grow. True as fuck (as a natty).

It's like "mission accomplished", now what's next? I'm currently trying to increase my strength, but still, it doesn't seem as exciting. Perhaps I should change training routine. Been doing the same routine for a while now (5x5 for 3 months, then switched to BBB), also I train at home so I always do the same exercises (all compound movements + some accessory workout, including weighted calisthenics).

I'm not saying I'm going to stop lifting (actually, It's a drug for me), I just feel like I need something else to conquer.

Apart from lifting, I've been reading lots of books. Mainly non-fiction. Most of the books advised here on TRP + some stuff related to business/finance.

Plus to that, since when finding TRP, I stopped my porn addiction and all the bad habits. All I lack I guess are bigger goals and action action action.

What's your advice on all this? Thank you very much in advance.