That moment, you know you have to cut, you've laid it out, measured, remeasured, scoured the web for any other alternative, checked the books, the magazines and the blogs. Faced with the terrifying prospect of completely and irrevocably butchering that very expensive piece of wood, when do you decide to cut?
Once scrambled, you can never get the yolk out of the whites.
Ah hell, it's just a piece of freaking wood!
Wait though, what if you made an error, how do you correct it at this point?
What if that joint isn't beefy enough?
What if the grain just isn't going in the right direction?
These thoughts are the cancer of woodworking, if you don't overcome these fears, face those demons, you'll never get a damn thing done!