Its not luck, its a mix of good genetics and a good grower. I know what you mean when I first started it was in a small closet with a regular luminescent lightbulb (piece of shit plant ahahahaha), upgraded to cfls, and then got a 400 HPS which is where I am now. One thing I've noticed is that with each grow I'm steadily getting better, because I'm steadily learning, and upgrading my setup, but at some point I'm not going to be able to get WAY better, I might get a little better, but nothing like the strides I took in the past couple of years, and I think your at that point. If not, then your almost there