Hammer and Nails

No matter how carful you try to be from the outset, whenever you have to work with hammer and nails you end up whacking your finger!

It never fails. Each time you have another go maybe days, weeks or even months later you remember how much it hurt last time and try be careful. But still, as the job moves on and trying to get it finished with a rush, the hammer meets the nail but the bloody wrong one!