This used to get me mad and frustrated as well. I used to obsess over the latest, greatest information coming from T-Nation. I wanted to be Arnold. Ya know what? I bought all the supps, began a "bulk" diet, lived a sedentary life in fear of catabolism, and was always unhappy. Moreover, I failed to do the most fundamental thing, which was to work hard.
Just take a look at some the pics people put up in the Performance and Photos Section. A lot of what goes on there can be considered narcissim and unhealthy for the spirit and mind.
Thankfully, Dan John's approach enlightened me and I've become much "looser" in regards to training and nutrition. In almost zen-like fashion, the less concerned I am about becoming bodybuilder, the better I look and feel.
For me, training has become the path to a healthy, fulifilling life, not the answer to my insecurities.
Sure, I weigh under 200lbs, but it beats setting my stopwatch for my next meal while eating lunch.
As the good Prof said, genetics is number one in determining how your body looks and performs. If you don't have great genetics, it'll take you a while to achieve significant results. All you can do is eat well, lift, sleep, and PLAY.