Once you understand yourself, you can begin to improve yourself.
Recognize that there are two main systems you use to process the world around you.
These are known as System 1 and System 2. The main difference between the two is that System 1 requires little to no effort to operate, whereas a conscious effort is necessary for System 2 to work. You would use your System 1 to understand simple sentences, and your System 2 to fill out a tax form.