1.Go to gmail.
2.Then click on need help.
3.then they will give you three point so click on " i don't know my password]"
4.when you click on they will ask your email of gmail.
5. then type your email they will ask you to Enter the last password you remember.then type any password you remember.And then click on continue
6.then they will ask to choose "text message" OR " automated phone call
7.when you click on it will send verification code when you enter the code they will say you to enter new password