Same problem; I prepare everything the night before, clothes by the bed, breakfast ready in the fridge, dishes set at the table, and bike/helmet/gloves/shoes prepped in the entry.

It is especially hard when I check the weather the night before and they forecast a mean headwind or some sort of "nasty" weather. Also, it is tough if I let my mind wonder right after my alarm goes off about how nice it would be to sleep in for an extra 20 mins and drive in. I always regret skipping the bike the moment I sit in the car (except on subzero / windy winter mornings) and even more so when I have to deal with other vehicular traffic; and then I have to re-live the misery due to my morning mistake when I step in the car for the ride home and it is gorgeous outside with a perfect tailwind...