What to do when the time is short? Carry on. You know you have the Lord, who'll come through for you. Don't think of all you have to do, just do the next thing. He'll help you and if the time is short and running out, will you trust Him to see you through it ?
Don't try to plan too much, just keep your focus, love your life, and carry on.
Oh, yeah... and Stay Out of the Future!