No kidding!!! It is a little scary for someone like you. I cannot imagine, for the moment anyway, you not having to multitask to the max for your day. And what will you do for those 5 hours in the morning while the rest of the world sleeps??

I think that telecommuting (which you should have started two years ago!) will take some of the edge off of leaving. You will already be in the home mode, so I recommend that you do it as often as allowed. The transition will be easier, in my opinion.

It will be harder for someone like you, but, easing into it this way will really help. and just thinking about what you will be able to do after this is fun. :)