For some weird reason my Honda civic seems to shut off while I'm at a stop or even driving. At first I thought it was my distributor cap and rotor so I replaced them. It turned on and worked fine for about two weeks. Then it happened to me again, this time I changed my spark plugs and it worked fine for awhile, but as soon as I parked it shut off on me and wouldn't start again.

Replace the Ignition Control Module and coil:

https://www.askmehelpdesk.com/cars-trucks/faq-how-troubleshoot-repair-maintain-hondas-46563-4.html#post265896