hi 2828
sure sounds like OCD type symptoms.
the "just right" and "have to" are a common theme for many with OCD
if it is getting to be stressful for you, one of the most helpful treatments IMHO is cognitive behavioral therapy (CBT)
we have some info on CBT and other useful info re OCD on out sticky thread above here
http://neurotalk.psychcentral.com/showthread.php?t=1395
hope that helps a bit and welcome to NeuroTalk