First lets talk about that sexy af selfie you got going on. You are smoothhhhhhhhh. But not lets get down to business. It is posts like these that help new players and some players who have been around for a while but have not looked at sites like you mentioned above. Your mind is a muscle and you are correct getting reps in playing the deck will only make you better. It becomes easier to make decisions because you know what your deck can do. It also helps build confidence. And along with critical thinking I truly believe that confidence plays a pretty sizeable role in this game.