Confusion is good for you. According to one recent study students who experienced confusion when studying actually did better on the test. In fact, it seems an "impasse" of some sort is required for successful learning.

"Confusion, D’Mello explains, is a state of 'cognitive disequilbrium'; we are mentally thrown off balance when we encounter information that doesn’t make sense. This uneasy feeling motivates us to restore our equilibrium through thought, reflection, and problem solving, and deeper learning is the result." Put another way:

"Don’t be afraid to be confused. Try to remain permanently confused. Anything is possible."

~ George Saunders