I've been on a weight training routine for 12 weeks and am about to take a planned 2 week break. I've been doing medium reps, getting about 1 gram of protein per pound of body weight a day, (I weigh 175), drinking about 140 ounces of water a day, and tracking my workout progress with a notebook.
I've found I actually get a great sense of enjoyment out of doing this (even changing my diet is enjoyable), but my muscle gains are small. But then again, I don't keep track of healthy fats, carbs or calories. I've only gained about 10 pounds over the course of 12 weeks, and I don't know how much of it is actual muscle (haven't started on skinfold measurements yet, mostly due to laziness). Then again, I've always had great metabolism. I could also get more sleep. There is a lot I plan on changing when I am done with my break; just being more involved with it in general.
I might try the Stronglifts 5x5 program next, because I think I really should focus on increasing strength initially. Also, I seemed to do better with a total body workout than I did with a split routine.
But the main thing I'm concerned with is my deadlift form. I've studied the hell out of using proper form, but I still feel like I'm doing it wrong. And I'm not going too heavy yet (155 lbs. is the most I've done so far), but I'm still wondering how much my form has to do with this back discomfort (and my left knee, to a lesser extent) that's been coming and going for the last 5 days or so.
But even though I'm not quite satisfied with my gains, I'm still happy with the sense of accomplishment I get from every workout. Even moreso when I correct past mistakes.