Is being somewhat Narcissistic a good thing?

Don't put others down to make yourself feel better. That's just a lack of self esteem on your part. Yes you should absolutely be proud of who you are (if you're a good person). There is always room for improvement but that's the spice of life. No one is perfect. Ask your mom or friend to honestly tell you their opinion. They'll know you better than anyone else and give you the accurate truth. If they tell you you're alienating others by your snobbyness then work on that. Why now volunteer somewhere to help others? It'll give you perspective on life.