How to I effectively prepare for the LNAT?

Quality over quantity. Deliberate practice is key. There will be a good number of questions that will be easy for you, and some that are more challenging. You will have to follow up on the questions that you got wrong, and identify the reasons that caused you to make a mistake. It is easy to look at the answer and assume you would have come to the same reasoning, but there is a difference between working backward from the answers and actually getting the right answer. You will also have to pay special attention to the questions that you thought were easy but got wrong, as those are the questions that you will most likely pay the least attention to.