Struggling at work - looking for tips.

I'm not a tech( outside of working on my own ) but for years we have taken the family car to one shop for service. they are well nown for their quallity of work. One day when i was in picking up my car ,I saw a sign that i had never noticed before hanging over the shop exit door. It said would you drive this car home? I kinda laughed to myself and asked one of the techs when they put the new sign up. He said thats been up forever. I made a joke about it and he said yea but you know you would be surprised how many of us get to this door and see that sign and say O @#*& I foregot to check this or that. No doubt your a good mechanic or it wouldn't play on your mind. Maybe you don't need a shop size sign but maybe a couple in your work area wouldn't hurt.