No matter how good you are at remembering things, there are times when you can forget your password, many websites though have a feature that will help you reset/retrieve you forgotten passwords.

Gmail too has an option to retrieve forgotten passwords by asking a series of questions, however they have now added a new option to recover your password through a SMS text message.

To make use of this feature you will have to sign-in to your Google Account and select ‘Change Password Recovery Options,’ enter your cell phone number and click ‘Save.’

Tip: Recover your password via text message [Official Gmail Blog]