If you have forgotten your Mac password, don't worry this There are lots of easy ways inorder to Reset Macbook Password. The following tips will help you reset the administrator password on the Mac and reset the password to a simple user account.
Restart your Mac and enter an incorrect password three times in the login window. You will see the password hint and an option to reset your account password with Apple ID
Click the little button to the right
Enter your Apple ID and password and click Reset Password
A warning is displayed if there are changes in the keyring that stores frequently used passwords. Click OK to continue