You Can Do Anything, But Not Everything.
The world is filled with great things to do, make, and accomplish, but not with a lot of time. This quotation from David Allen, the creator of the Getting Things Done productivity system, is a reminder that we have to remember what's important to do rather than trying to do it all.
You can do whatever you want, but the time you have for whatever you want is limited. This is why prioritizing your time is so important. It's important to figure out what's most important to you and what can wait. That can be a tough choice, but it's the line between getting things done and burnout.