A useful method that I used on my last build is touching the metal parts of the case to ground myself. Also, do not build on carpet, as static electricity can build up if you move. Don't wear socks, and use an anti-static band if you can.
Really, it's usually as simple as frequently grounding yourself before touching components. ESD is a hazard of building, but it's really nothing to make yourself paranoid over. Use common sense.