How difficult is it to change your name in the USA?

How can you change your name and is it difficult and very time consuming? Can it be done via an online legal service? Any advise would be appreciated.How difficult is it to change your name in the USA?I like my son's name Afnan ChewCurry I wouldn't change it!!!
How difficult is it to change your name in the USA?
yes afnan mama, that name suits his curry chewing *** very well!