If you have forgotten the password to login to your account, don't panic. It's ease to get a new one.
Visit this page , and choose the forgotten password? click here.

For security reasons, the password won't be the one you already had, but a new, randomly generated one. Use that password to login to your blog, as you usually would.
Any problems just Contact Us at the support site. A member of staff will be glad to help reset for you.
To change the password back to what it was, or to another more easily remembered one, login to your profile interface, and click on the Profile tab. Select reset password link from that page, to be presented with this page:

Enter your NEW password twice in the fields. These two must match. Then, click on update password, which will make your new password functional.