Don't beat yourself up about it.
This. I've never lost sleep over the fact I got a girl at work sacked many years ago. I was a department manager back then, one of the other members of staff found her asleep at the back of the store & pointed her location out to me. I was angry that she was getting away with this (it wasn't the 1st time she'd done this according to what I'd heard) I went & got the store manager who woke her up & sacked her on the spot!


I get very angry when I hear people break the rules & get away with it, it's one rule for all of us at work not one rule for them & another for us. It's usually the shirkers that break the rules in my work

I think nothing of 'whistle blowing' to the bosses if I think it will get rid of said shirkers.