Hi Welcome to JustAnswer
Please tell me which email id is causing problem ?
I initially thought you are not able to login to your email id. But it seems you are trying to login to your mac. Please try below instructions and reset your password :-
Use Recovery Mode
A final option for resetting your password ***** ***** use Apple’s recovery tools. This will perhaps be the easiest approach in most cases, and can be done with the following procedure:
If you use FileVault encryption with your Mac, the password ***** utility will not show your boot drive until you first unlock it with Disk Utility. To do this, open Disk Utility where you will see your drive grayed out in the list of devices. Select it and click the Unlock toolbar button and then, after supplying your password ***** unlock the drive, you can select your disk in the password ***** utility.