OCD much?

Like most siblings, my sister and I are constantly getting on each other's nerves.  She is very ADHD and unorganized where I am a little OCD.  When you mix two people like this together you get a train wreck.  For example, her room is always looks very messy and unorganized where my room is organized and clean.  I cannot understand why her room is like this and she cannot understand why I would want a room that is organized.  She likes her room messy, she says she can not find anything when she cleans her room.  It is like my sister and I are on the opposite ends of personality, we are completely different.  I hate being late for anything, but my sister is constantly late for everything.  She doesn't think it is a big deal to be late or forget something, where if I am late or if I forget something I get upset.  Sometimes I wish I was like my sister and not worry about things just to see how it is to be carefree.