You can opt to carry out the passport renewal process on your own. To begin this process, go to the Passport Seva website or the District Passport Cell to get the application form. You will be asked to submit your old passport along with self-attested photocopies of a few supporting documents. Remember to carry all the originals of your supporting documents. If you feel this is a very complicated process, you can always seek the help of a passport agent, who will be able to guide you through the passport renewal process for a fee.