This quote encourages us to focus on the present moment rather than worrying about the future or dwelling on the past. We should remember and appreciate the past, but it is important to realize that it is over, and we should not allow it to prevent us from living in the present or worrying about the future, as the future does not exist yet and may never come. The only thing that is real is the present moment, which is why we should focus on making the most of it and take proactive steps to make our future brighter.