Why do we thank God for so much Torah and for so many commandments, is it not true that when a person attempts to grab it too much that he ends up with nothing?

The idea is to stress constancy and consistency. When we constantly learn Torah and learn that practically every situation in life presents us with an opportunity to fulfill the mitzvah, we developed a sense of consistency that will protect us throughout every moment of our lives.

This must be a person's intention each time he sits down to study Torah: he must intend that his Torah train him to be constantly aware of the opportunities of life and the need to pay attention to the constant dangers to his soul. (VaYikach Ovadiahu)