Stop over thinking. That's it. It's that simple. Stop doing that and
instead focus on what's really important and you'll grow a hell of a
lot faster.

Every day people ask me what angle they should set the incline bench
to, should they do hill sprints or sled sprints, whether they should
wait two hours or two and half hours between meals, if they should
do six reps or eight reps on dumbbell presses, if they should rest
between arms when doing 1 arm rows or do both arms and then rest.

It's all way too much thinking and over analyzing. Stop stressing
yourself out over all the minute details that make very little
difference in the big picture.

The majority of people who fail to gain any appreciable amounts of
size and strength do so because they over think, over analyze and
bang away on the keyboard more than they actually eat, sleep and
train.

Simplify it all and your results will come much faster. Not to
mention the fact that your life will be a lot less stressful.

Muscles get bigger when you apply a stress they are not used to and
then feed them properly and allow them adequate time to recover.

How much stress is enough? A lot less than most people think. Muscle
growth can be stimulated in just a few hard sets.

Your goal is not to get the most massive pump possible. Skinny guys
tend to chase the pump during their workouts. It's one of the
reasons why they remain skinny. Doing an extra three sets of curls
because it temporarily makes your arms a half an inch bigger is a
waste of time. It does nothing to contribute to real muscle growth.
The pump is just a rush of blood in the muscles. It's not real,
lasting size. So don't obsess over it.

The easiest way to stimulate growth is by lifting heavier weights or
doing more reps with the same weight (up to a point). Anything over
twelve reps on most exercises will be a waste of time for most
people. Hardgainers are better off sticking with ten and under.
Advanced guys can get away with higher reps, occasionally;
especially on lower body exercises.

So your goal is to beat your training journal every week. It helps
to have a training partner and to try to beat him as well. The more
motivation the better. Just get stronger, no matter what it takes.
Do this three or four days per week and don't spend more than an
hour in the gym.

Simple, right?

Now stop thinking and start growing.