In order to find, you must first search.
It's not the matter you cover so much as it is the manner in which you cover it.
Days are expensive. When you spend a day you have one less day to spend. So make sure you spend each one wisely.
Learn how to separate the majors and the minors. A lot of people don't do well simply because they major in minor things.
If you want to have more, you have to become more.
People would do better, if they knew better.