I don't think we should add to our own problems things we can not know or change...but let every man work out his own salvation in fear and trembling.
what about the next verse?
Philippians 2:12 Wherefore, my beloved, as ye have always obeyed, not as in my presence only, but now much more in my absence, work out your own salvation with fear and trembling.
Philippians 2:13 For it is God which worketh in you both to will and to do of his good pleasure.
how about that?