Note: If you're not able to follow the steps provided below, I can also help you over secure remote session or start a live discussion via phone as per your convenience.
Please follow the steps given below:
1. Try to access your Yahoo Email account as given under:
A. Try to login into you webmail account by clicking the link given below:
B. If you're not able to login, please go to https://edit.yahoo.com/forgotroot, and try to reset your Yahoo email account password.
2. Try to access your Gmail account as given under:
Click the link:
If you're not able to login, please Click "forgot your password"
And follow on-screen instructions to create a new password.
If you have other queries regarding this, please reply back to me the box given below.
And kindly if you can take a second to rate my service(-OK or more -by clicking stars at the top of the page and choose Submit), that would be greatly appreciated.