The only way would be to force a factory reset and then restore your backup and create a new password.
To force a reset without having your password, you would need to either let your battery discharge so it goes off and then charge it and restart using the following procedure, except choose wipe data/factory reset instead of wipe cache partition. If you do not want to wait for the battery to discharge, you can force a reboot into recovery mode by pressing and holding the volume down and power button simultaneously and then as soon as you see the Samsung logo appear on the screen keep tapping the volume UP button. There is no other way except to remember your password.
