A young couple went to a Zen Master for advice. They wanted make sure they are doing the right things the day they die. They asked the Master about how they could guarantee that they could both be doing the right things the moment of their death.
The Zen Master said it was very simple. All you need to do is trust that you are doing the right things at that moment. "That's impossible, said the couple, how can we trust that we are doing the right things at that moment when we die?" "That's even easier, simply trust in what you're doing is the right thing all the time" said the Master and walked away.