The fourth meditation of Marcus Aurelius reads, “Remember how long you’ve been putting this off, how many extensions the gods gave you, and you didn’t use them. At some point you have to recognize what world it is that you belong to; what power rules it and from what source you spring; that there is a limit to the time assigned you, and if you don’t use it to free yourself, it will be gone and will never return.” Marcus is asking us to recognize our own mortality - to truly recognize it - and then to look at the things we're putting off and ask ourselves what exactly what we're waiting for.
The chart I reference in this episode --> [link] Source for the meditations --> [link]