If everything seems under control, then you're not driving fast enough.
Since many of us long for feeling like we have everything under control. But if that's the case then it means you're not getting as much done as you could. If you can reach a point where you feel comfortable with things being a little out of control you'll be able to get more done and have a fuller experience.
This is easily applicable to everyday life, by taking a look at how many balls you're juggling and whether you feel challenged enough. Be able to give up some control in order to push your boundaries.