When do you sleep to be able to wake up at 4.30? Does the sleep time ever vary? How do you manage that? Do you feel guilty on random days you don't follow through on this? Or are there no random days?

I find the end time is harder to be disciplined and 'that' affects the wake up time SEVERELY. I need 8 hours so no matter what I have been trying for almost 2 months now, my wake-up time doesn't move - always between 8 and 8.30 (several of the HOW TOs I have tried - some still to go). N i want to make 6am a habit. Any suggestions on this?

Happy to hear this, WiseK!   While I tend to be hopeful and optimistic, I also think that we need systemic ways to incentivize new designs.  Just as NBC couldn't have birthed YouTube, I don't sense that current crop of dot-coms can pave the way out of it.  In personal conversations (and public talks), most people (including heads of these big companies) will agree to this but the organizing principles of their company infrastructure often puts a ceiling on how deep they can pursue inner transformation.