I'm going on a long road trip tomorrow

Someone in the family is having a wedding. I'm not sure how to feel about it, really,especially considering my feelings about... feelings.
I'm not jealous, I can tell that much, but something in me starts screaminghurting when I think about congratulating them on something I don't think I can achieve don't feel worthy of don't know if I can even feel have such complicated feelings about.
Is that selfish of mecan't I just let myself be selfish for once?
I don't know.