What's a Berocha?

There's an old joke about a man wanting a Berocha for his new Bentley and goes to the Temple and asks for an appropriate Berocha for his Bentley . To which the young assistant Rabbi asks innocently "what's a Berocha?!"
The truth is that most of us really don't know what a Berocha is. For example what is the reason a man of Moshe's stature can make a Berocha whereas a lesser person can't? After all we all make Berochos in our Prayers-over 100 each day!
So what is so special about Moshe making a Berocha?
Furthermore, what is the difference between a prayer and a Berocha. Furthermore if a Tzaddik can give a person a Berocha why is it that most of us still struggle even after receiving a Berocha from a Tzaddik ?
The answer may surprise you. The term Berocha means a flow from a higher source.
That means to say that the Berocha that a Tzaddik gives a person is commensurate with the flow or potential that the individual has . If your potential is to receive only after struggle that will be the result of the Blessing.
So if the Blessing only actualizes what i have in potential then why the need to receive from a Tzaddik's Blessing?
The answer may surprise you. Sometimes our potential is stuck in the mud and cannot get started. So what happens to our potential ? It remains in the spiritual world ready to reward us for a Blessing unattained in our world. The power of the Tzaddik is to bring it into the real world so that the potential we have should be realized sooner than later.
If that is all then what is so special about the Blessing of Moshe over all other righteous people including his brother Aharon?
Moshe saw the world through the eyes of the Torah . everything in the universe has its' source of existence within the Torah. When Moshe expressed a Blessing it was a Blessing from the Torah source of that Person, Tribe or Nation.In other words, the Blessing of Moshe is a Blessing from the Torah itself!
The difference between a Blessing from the Torah and all souls or angels ?
The Torah identifies the essence of the recipient of the Blessing so that there can be no deviation. Furthermore by invoking the Torah the Blessing must happen and must happen in the easiest possible manner.
In other words, by Blessing the People , Moshe made sure that their potential would be realized and in the easiest possible sequence.
This is the meaning of the insertion of the words Torah Tzivah Lonu Moshe - Moshe commanded us to keep the Torah in the Blessing of Moshe. This tells us the source of Moshe's Berocha- the Torah itself is Blessing us and making us fulfill our untapped powers.
The ability of Moshe to bless actually then surpasses those of his predecessors, Isaac and Jacob. Even though their Blessings may include matters that Moshe did not mention, nonetheless their Blessings have as yet to be realized fully. Only Moshe's Blessings have been fully actualized. The latter part of Moshe's Blessings
are expressed for the future . They are present in the spiritual sense but haven't found the people upon whom to be drawn upon. This is similar to the lightning being drawn down to the ground by a rod. We must merely make ourselves into Moshe's rod in order for the Blessing to be drawn to the ground. The problem is that we haven't wanted to really do so as yet!