txinvestigator
TGT Addict
His definition doesn't matter. YOURS should be 'a reasonable and immediate fear for your life or the life of a third person.'
Fear of your life is not a justification. It may well be a valid emotion or feeling if a person is using or attempting to use unlawful deadly force against you, but it is not a justification.
If you ever ride in a car with my sister, you WILL be in fear of your life, but that don't mean you can shoot her!