You need your Google Account password to sync Gmail, Calendar, and Google contacts to your phone You also need this password to use Google Talk and download apps from Android Market™. If you have forgotten your Google Account password, you can try to recover it by going to the Google website.
On your phone or computer, open your web browser and go to https://www.google.com/accounts/ForgotPasswd.
Enter the email address or username that you use to sign in to your Google Account and click Submit.
Follow the instructions on the screen to reset your password.
If you don’t have an alternate email address or cannot access the email account you used to create your Google Account, you can reset your Google Account after 24 hours by answering the security question for password recovery.