Lesson 1: Always put safety boots in a box. Never leave them in your car boot. After a year or so, the rubber rots. Learnt the hard way. Had to spend hours cleaning the car boot.
Lesson 2: Never go on a row with cleaning. Learn how to stop. Wanted to clean some papers in the car. Then though, "what the heck, might as well clean the boot" which gave rise to Lesson 1. And then, to compound on the error, though "ah... might as well clean the whole car", which in fact should be Lesson 3.
Lesson 3: Don't stay back even a bit after work. You might invite a lot of nice higher management people asking funny questions.
Lesson 4: If you're dead tired, take a bath and go to bed. Don't listen to your subconscious mind telling you, *whisper* "clothes haven't fold... floor dirty... wipe table... throw garbage... ".
Lesson 5: Don't blog when you're tired.