I will not be able to log back into Windows 10 when I log out.

I changed the password on my Windows 10 account earlier today but can't for the life of me remember what I changed it to. Therefore, when I log out or turn the computer off, I will not be able to log back in to my account.

The computer is still on, and I am still logged into the account in question. I currently have access. What can I do from here to reset the password?

Thanks gents! Sorry to be so stupid, I am kicking myself