8 A.M. or 7 P.M. it doesn't matter, just start up again. You don't push a car up a huge hill just to let it slip all the way back down again, you stop it just as it slips. Either way, what's important is just fixing it again. I slipped up today also, but I'm back on, that's the most important thing and as long as were trying and it doesn't happen all the time then just forgive yourself (Make sure you don't feel guilty if its a rarity), Drink a large glass of water, and move on. Tomorrow's another day for us to learn new things, when bad things happen lets just enjoy a new experience and keep going. You should be proud of yourself for recognizing that you messed up today. That's a step in the right direction.
In order to succeed, your desire for success should be greater than your fear of failure.
5K PR: 0:24:22.5
10K PR: 0:56:34.6
Half PR: 2:29:11.5
Marathon PR: 5:07:30