Cana

I decided to join Cana Community in my university. Do you know what Cana means?
Well, it's taken from the Bible. Jesus performed His first miracle in Cana. So that's why the name is Cana.
In Cana Community, we are taught to serve God and other people, by being church participants, doing social work, etc.
I want to join it because my heart asked me to. I always feel that He has given me a lot. I want to give back to Him, although it's impossible because His love for me is unlimited, whereas I'm only a human who always sins against Him and others. Besides, I've always wanted to be a church participant (e.g altar server, lector, etc) but there is always something that doesn't let me do it - something I can't say here. So now that I've got the chance, I want to praise and serve Him with everything I have.
But because of Cana, yesterday I got lectured because I went home at 7 PM, whereas every organization in my university starts in the evening....I don't really know what to do. I think I just have to give them some explanations, and hopefully they'll understand. But I promise to myself that it won't affect my GPA!
I wanna do and balance everything with love :)