OH Ditter....I know how that is....actually happened to me last night..I am working on a scrappy and I didn't know I had to assemble my blocks in all the same direction...I only realized it after I started assembling my rows....Guess what? IT isn't going to be correct..it is only a scrappy and I don't think anyone will know..so you just have to let somethings be...Then when I started assembling my borders..I spilled red Soda pop on them....now to the wash and I haven't even been able to quilt it....Anyway..you are right to walk away and let it sit for awhile.