living in "holy fear"

I've been thinking about this for a while... So it's summer now and as soon as I found a way to relax post-exam time (took a lot longer than expected) I hit that post-exam lazy period and instantly found myself battling with both laziness and numbness... Yeah I know it's important to relax and all that, but there must be a balance somewhere, right? So right now I'm striving to find that balance. In the midst of everything I've been doing (see previous post), with that summer feeling and the job-hunting and everything else, I want to still be seeking God with all of my heart. So how do I keep the balance...?
The phrase that has stuck in my head the last wee while has been "holy fear", it comes from the NIV version of this verse "By faith Noah, when warned about things not yet seen, in holy fear built an ark to save his family." Hebrews 11:7 though I guess a better way of putting it would be "reverent fear" like it says here. I think we often forget or at least I often forget that God is magnaminously holy... and His holiness is kinda scary! It's incredible that he shows us any mercy at all! But then that's what makes it so amazing, that's what makes it grace... we can approach Him, be part of His family because of Jesus! But then I should be living my life in light of that... in light of grace, every breath is a gift and I should always be aware of that.
I think there is an antidote to laziness, to complacency, to taking God's grace for granted and it's knowing God, knowing His justice, His righteousness, His mercy, His holiness, His gift of grace. Surely if we start to grasp these things and that they are all characteristics of the one and only God, then we couldn't possibly live in vain!