Yahoo mail account is basically safe and secure. Always remember our mail account password. If you try to login your account and unable to sign in. Try to follow some simple steps It can be take help of yahoo help support service. Password can be changed in a way:
First open the site mail.yahoo.com in any browser.
After open the site Log into the Yahoo! Mail website.
Hold your cursor over the Gear button in the upper-right corner
Select "Account Info.
Click the "Account security" menu.
Enter your password
Click the "Change password" link.
Create a new password
Sign in with your new password.
Yahoo Password is changed or login to your account with the help of new yahoo password
Another way to recover the password with the help of yahoo support number or yahoo customer support service