Thanks for so many replies and thanks for the wishes.

@Bairaghi: May be it is my introverted nature but I could not adjust in US at all. Also, my family members don't want to come to US. Now my excitement in US has disappeared. I dont know why I naturalized. I will work back in our family business like I did before when I came here. Feeling very sad to be here.

Thanks for so many good advice; I will probably stay in Nepal for few months and decide.

@KeyserSojo, where do I get a "Relationship Verification Certificate"? I have a birthcertificate - will it work?

Do I have to go to the CDO karyalaya to notify? how does it work? (if I renunciate)