Struggling at work - looking for tips.

I can tell you this I'm not a tech, but I was a Manager at a Nissan dealership for a long time and my best friend happened to be the head Tech. Well one day he did a tire rotation and didn't torque the right wheel down all the way! (Ouch) My friend has been a tech for 26 years, He made a bad mistake,the wheel came off on a six lane highway luckily know one was hurt! or killed. Obviously,his mind wasn't their that day or he got rushed. Just come up with good work patterns. Always remember speed comes with consistency. I would also not worry about what others think. If you feel like you have
a Black Cloud over your head then you will!