One thing only I know, and that is that I know nothing.
No one is more blind than those who believe they see all.
Often people attempt to live their lives backwards: they try to have more things, or more money, in order to do more of what they want to they will be happier. The way it actually works is the reverse. You must first be who you really are, then do what you need to do, in order to have what you want.