So, how do you know what's wildly important? It's simple - just ask yourself, what are the few things that will make the biggest difference in your life or business. For example, if you're trying to get in shape, your wildly important goal might be to exercise for 30 minutes, 3 times a week - not to become a marathon runner overnight.
The second discipline is to act on lead measures. Think of it like trying to lose weight - you can't just hope the number on the scale goes down, you need to take action by eating healthy and exercising regularly. By focusing on the things you can control, you'll be able to make progress and see real results.
For instance, if you're trying to write a book, your lead measure might be to write for 30 minutes each day - not to worry about the whole book being finished tomorrow. By focusing on the daily action, you'll be able to make progress and eventually reach your goal.