I've got HSV-2 as well. I've been dealing with it my entire life. I always keep a little bottle of Releev on me. I find, that for me, it works better than Abreva. It's a little pricey at around 20ish dollars a bottle, but it lasts a really long time and a little goes a long way. You can find it at CVS and Walgreens so there's usually a coupon floating around. If they ever start getting painful, I just place a gentle ice pack on them to help the ouch go away.
Other than that, I would recommend that you learn your triggers. Mine are stress and cold so I know to be on the lookout when I get stressed. If I feel a tingle, I can put a little Releev on the area to hopefully avoid an active outbreak.