Step 1: Go to facebook.com
Step 2: Click on 'Forgot your password?
' instead of clicking log-in so many times.
Step 3: You will be redirect to this page
Step 4: Enter you email or phone number, then a reset password will be sent to your email or phone.
Step 5: Then, go check you email or phone, use that password given to log-in with Facebook again.
Step 6: After you have been logged-in, go to Account (Click the down arrow of and you'll see these; click on account settings.
Step 7: Change your password. You need to enter the reset password first, then the password you wish to enter ( a password mix with letters, numbers or symbols is safer and stronger but make sure you can remember it).
Hope it helps.