Clayton M. Christensen writes a powerful article in HBR in which he shares a set of guidelines that helped him find meaning in his own life. He summarizes:
I’ve concluded that the metric by which God will assess my life isn’t dollars but the individual people whose lives I’ve touched.
I think that’s the way it will work for us all. Don’t worry about the level of individual prominence you have achieved; worry about the individuals you have helped become better people. This is my final recommendation: Think about the metric by which your life will be judged, and make a resolution to live every day so that in the end, your life will be judged a success.
The article resonates deeply with me, specially the last two paragraphs.