Teen needing help, life decisions?

Ok, I go to a catholic High School and go to church every sunday. I recently went on a retreat and had a profound religious experience. I felt that I needed to stop what I'd been doing for the past year, partying and being with my girlfriend the anti church stuff, and listen to what god is calling me to. It's been almost a week and I felt great, I helped out my grandmother with lawn work instead of hanging out with my friends and helping out at the church dinner. Now the very things I felt guilty about and never wanted to do again (lust, partying, being a punk) after my experience, I now feel pulled to do again as it is the life that brings me joy. I feel pulled equally in each direction I don't know I have to choose or I'll be miserable. What should I do, god and community service or girlfriend and friends???