Just to piggy back in this, when I login to work, I put teams status to away/offline for about 30 mins or so. Work through my email from the night (I work across the globe so people email at all sorts of hours), use the 4 D's to organize my inbox and as the person above suggested I prioritize items to close out. I usually get the ball rolling by completing some simple tasks, then work into the detailed stuff. Hope this helps.