If you wish to change your name and your state allows name changes by adopted use, start by telling all your friends, relatives and coworkers of the new name. Ask these people to refer to you by your new name only. You cannot use your old name and new name simultaneously. You will also need to notify certain businesses and government agencies. If this is the case, an official name change document may make your life easier.
Courts generally grant name change petitions provided the individual has no fraudulent intent.
States that allow name changes by adopted use may have some restrictions with regard to minors and convicted felons. Work with an experienced lawyer in your state.