Very nice lessons. You say something that happened to me yesterday and will become a post. A clamp failed and the instrument I was working on fell to the floor. It hit the clamp and the sound board broke. I need to made a new one and remove the broken one. But I felt blocked when I saw it. So much effort for months and in one fell swoop ever went to shreds. Fortunately, nothing else broke and it won't be a lot of work.

This mental block became something positive. I could've turned the rest of the instrument to splinters in a fit of rage.

But staying positive and looking towards the lessons learnt was a better choice.