To update your password, simply log in to your Headspace account from a desktop computer here. Go to the 'Account' section of your account and then click on the 'Settings' option.
Once you've entered your new password, be sure to click on the green 'Save' button at the bottom of the page.
If you've forgotten your password, go here to reset it.
Please note that if you've registered with Headspace using your Facebook credentials (the 'Sign up with Facebook' feature), you will not be able to update your email address or password via Headspace. You'll need to send us a note at firstname.lastname@example.org for further assistance.