I've realized lately that I often fool myself into thinking I'm proficient in some subject by picking up on concepts quickly. I think I "get" it because I can understand something on a conceptual level, but when it comes to practice, my deficiencies become apparent. I guess the tricky part is to push myself past those initial concepts to delve deeper into the subjects with practice. I need to slow down and remind myself that I don't really "get" it just because I can understand the concepts in a very broad sense.