As Gmail contains all your important documents and mails it is important to keep it as secure as possible. One of the many ways is tosecure it by changing passwords regularly. There are some steps below which will help you change your password.
How to change/reset your password:
Step 1: Go to https://myaccount.google.com/ .
Step 2: Click on Sign in and Security.
Step 3: Go to Signing in to Google on that page and click on Password.
Step 4: Enter your Password for Verification.
Step 5: Enter your new password to reset it.