Don't get a razor blade, seek help instead. Talk to family/a physiologist about your problems, slitting your skin won't make life any better!
Good grief - any drug store or hardware store, most dollar stores and grocery stores. Small packages, just ask. Specify single edged as for scraping or hand use or double edged for some cutters and for shaving.
you can order them via internet from China
Perhaps you can get help here:
http://www.fsamarin.org/teens-and-young-...
IN YOUR FATHER'S DRAWER OR TOILET CABINET.
I'm in Novato California. So please help!