Not everything is about you," Clary said furiously. "Possibly," Jace said, "but you do have to admit that the majority of things are.
If you find yourself imitating another writer, that doesn't have to be a bad thing, especially if you are a young or a new writer. However, you should be conscious of exactly how you are imitating him - word choice, sentence structure, motifs? - and think about why you're doing it.