People seldom look up in their lives, because we are used to looking down. . . What does this sentence mean?

Let me talk about my own understanding. I seldom look up. That is to say, people usually look at the immediate interests and don't look at the long-term problems. For example, if you have 1 yuan, people who pay attention to the present will use it all at once, but they don't think how much money they need every day to survive, and those who look far will save it.