If we were prophets or people of vision, we would see what is important and what is not, what will bear fruits and what will remain barren.
But we are simple people in an age of confusion. Our lives are filled with uncertainties—anything could happen, we have no way of telling.
We cannot decide which mitzvah is important and which will bear fruit. Neither are we expected to make our decisions that way.
All that's expected of us is to simply grab whatever G‑d sends our way, and do our very best at it. What will come of it? What is its purpose?
Only He needs to know.
Based on letters and talks of the Rebbe, Rabbi M. M. Schneerson 
