As you have hopefully passed beyond the need to throw obscene amounts of weight around, it's important to realize that not only will you get better results from training by feel, but you will also tend to put less pressure on your joints. Don't get me wrong, it's still crucial to train to failure in the six to eight rep range using compound lifts. Those types of lifts are important, but they are not the focal point of every routine. Use intensity-building techniques such as rest pauses or dropsets, to recruit more muscle fibers.
What can a bodybuilder do to break a plateau? Advanced bodybuilding training techniques are applied on an occasional basis to introduce variety into the bodybuilding routine in order to further stimulate muscle growth. The purpose of such bodybuilding techniques is to take the muscle beyond the point of failure. Muscular failure is the point in which performing another repetition in good form becomes impossible and also the point that stimulates the muscle to grow. Most of these advanced bodybuilding training techniques should only be used sparingly; do not use them on every workout or else you risk overtraining and/or injury. Supersets, tri-sets, and giant-sets, however, are the exception to this rule and can be used on every workout.
Last, but definitely not the least, your nutrition. You are what you eat! Get enough protein. Get enough carbs, fats and other nutrients to support your body. The question is what is enough. If you are really serious about working out and is training hard then you need to consume about 1-2 gms of protein per pound of your body weight. Again, this is applicable only if you are training hard and lifting heavy. If you are looking to bulk up, then you need to eat a calorie surplus; meaning more carbs and fats. If you are trying to cut down, then eat at a calorie deficit. Try to make sure that your diet contains as much raw food as you can think of. Besides that, cook as much as you can and avoid processed/canned foods as much as possible. Have a cheat meal every week to keep yourself in the game and to not feel like you are punishing yourself.
Weight trainers don’t usually expend the amount of energy in training that endurance athletes do, so they don't have to be as acutely aware of the intake of carbohydrate required to fuel such effort. For example, a marathoner or triathlete may require 7 to 10 grams of carbohydrate per kilogram body weight per day (3 to 5 grams per pound). This is a lot of carbohydrates—equivalent to more than 32 slices of bread for a 150-pound athlete.
Wide-grip pullups are absolutely essential to developing an impressively wide back. They are more lat intensive than their normal grip counterpart. To perform wide-grip pullups grasp the pullup bar wider than shoulder width, and make sure to come all the way down on each rep. Use muscle intention to really feel your lats doing the work. Pull yourself all the way up so that the bar is around chest level at the peak of the movement.
Another important part of form is using a full range of motion while doing the exercise, meaning you do not stop your bench press half way down. If you cannot complete the full range of motion you are probably using too heavy of a weight. Your motion should also be slow and controlled, avoiding jerking the weights, swinging the weights to get momentum, or bouncing the weights.