Worst was the 1st clean I ever did. Think I manged to do everything I could possibly do wrong. Huge house, all leaded, working off dodgy ladder, thought I'd squeegy it, had to rag it, didn't do enough research, knew 10mins in I'd made a huge mistake with the price, I ended up earning about £2.50 an hour, arms were killing me, discovered I really don't like heights. It's a miracle I pursued a career in shining after that experience but I learnt quickly and showed a bit of determination. The best is knowing on a daily basis, no matter how bad a day I'm having is that I'm my own boss, no answering to anybody else, worth it's weight in gold.