MacBook - Clearing Keychain and Password?

I have racked my poor brain but cannot for the life of me remember the password for my Keychain. I DO know my standard password but some sites won't let me on without my Keychain unless I "Cancel" or "Clear" a few times which is getting annoying. Is there a way I can just clear them both and not even use passwords? My MacBook stays locked in my study and no one uses it but me. My wife and kids have their own desktops. TIA.