I believe that this meaning of life applies to all humanity regardless of your belief system. The meaning of life is this;
To be a gift of yourself to others in whatever you do.
As a husband, be a gift,
as a wife, be a gift,
as a mother be a gift,
as a father be a gift
as son or daughter you are meant to be a gift.
As a professional, be a gift.
In your suffering and neediness, be a gift.
Do this and you will find some fulfillment in life. Do this as a Catholic with all the gifts God has given us through The Body of Christ His Church and your fulfillment will be complete.