Failing to cycle to work

Every day this week, I've failed to start cycling to work. I've got a whole range of convenient excuses. The weather is too bad. I'm too tired. I've done too much running to make it up the big hill. I'm late.

But I have high hopes for tomorrow...

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ETA: I seem to have failed again. Today's excuse is that I had to spent a couple of hours working over night and, consequently, I'm more interested in slurping down coffee than cycling...