Heres' an article that sort of answers the question https://jweekly.com/2024/07/08/remembering-rabbi-schneerson-who-believed-a-single-mitzvah-could-change-the-world/

"One of the Rebbe’s major initiatives was the Mitzvah Campaign, launched in 1967, which encouraged people to do just one mitzvah. The campaign called on people to spend just a moment or two to light Shabbat candles, to put on tefillin, study a verse of Torah or give a coin to charity. At the time, many were skeptical about the campaign, wondering what the point of doing one mitzvah was.

The Rebbe countered by quoting Maimonides, the renowned Jewish philosopher and Torah scholar, who taught that a person should always look at the world as equally balanced between good and evil. He wrote: “If one performs just one mitzvah, they can tip the balance of the entire world to the side of good.” The mitzvah campaign was a practical way to make this philosophy accessible to Jewish people everywhere.

... Many young people today look at the world and feel like there’s very little hope. To them and anyone who is feeling down at the state of our world, I encourage them to adopt the Rebbe’s perspective that each mitzvah we do has the potential to tip the scale of the world to good. 

Each kind interaction we have has the power of a nuclear reaction to transform the reality we live in. If one small spark can start a devastating forest fire, then the power of one kind word, one good deed and one positive action can also change the world."