Today, not starting is far, far worse than being wrong. If you start, you've got a shot at evolving and adjusting to turn your wrong into a right. But if you don't start, you never get a chance.
The next thing you do today will be the most important thing on your agenda, because, after all, you're doing it next. Well, perhaps it will be the most urgent thing. Or the easiest. In fact, the most important thing probably isn't even on your agenda.
You cannot buy your way to share of voice today; you cannot buy attention anymore.