If you wait, all that happens is you get older.
Larry McMurtry reminds us that there’s never a better time to get started than right now. Waiting just lets time pass by with nothing getting done, and no progress made towards what you really want. Before long you could find yourself out of time and still waiting.
Works best when you’ve been putting off an important decision, project or other undertaking until conditions are “just right”. Chances are that perfect time will never come about, and you’ll have wished you’d started sooner so you could be experiencing the fruits of that decision.