What should you do if you have genital herpes?

Antivirals. If you have active disease you should be on an antiviral (valacyclovir, famciclovir) to control the outbreaks and minimize the chance of transmitting it to others. Make sure any sexual partners are aware of the situation and always wear condoms.
Stay healthy. Keep your immune system healthy by getting plenty of sleep and eating right. Consider taking lysine and antiviral medication.