Honest Is The Best Policy.......... Right?

While I was at the gym today, having a fairly good legs workout. I noticed that there was a £20 note on the floor almost hidden underneath one of the cross-trainers. Before I knew it I was handing the note over to the receptionist. She said "Oh, she will be so pleased someone has handed it in," meaning that someone had obviously reported it missing. I was pleased that I had done a good deed, by handing it over, but also thought I was a bit of a mug for doing so, as no one saw me pick the note up, so wouldn't have known any different. I could easily have got away with it. Damn, why do I have to be such a goodie-goodie all the time? AND why couldn't I have found it on the street?
If I had found it on the street there would have been no way I would have reported it. Unfortunately the only money I find there tends to be small change, the most I have found recently was 21p in one go. I am in such a poor financial position that I pick up ALL money that I see on the street. Pride is long forgotten when it comes to my finances.
Oh well, let's just hope karma / kismet, whatever you want to call it, actually exists.