[matwood]

Set at least 2 alarms and get up. It's going to be rough for a short period, but you will adjust. There is really no trick. If you are so tired that you think you can't function (you can) do some jumping jacks and take a cold shower [1].

I started working at 6:30 this morning, and it's amazing. I watched the sun come up outside the window and I've had almost 3 solid hours of concentration time before the interruptions start.

[1] This all assumes you do not have some medical condition.