Over Rosh Hashana and Yom Kippur, I heard a number of stories that were like this. Through a single meaningful interaction with a well-meaning traditionally observant Jewish person, a Jew who is not traditionally observant chooses to learn more and become a paragon of traditional Jewish values. I hate these stories. I find them pedantic, and patronizing, not only because they remove agency from the individual and give it to a "higher power" but also because they just aren't so interesting. You know how the story is going to end. Usually with the person becoming frum, getting married, and having lots of nice, FFB* babies.
Aish HaTorah is responsible for the creation and propagation of a great number of these stories. Aish is a very controversial organization in the Jewish world. They, like Chabad, are dedicated to kiruv** and have a "slick marketing campaign" that includes videos, subsidized trips, and youth events. Many accuse it of being "deceitful" and "cultlike." Whether or not that is the case, an article by Cliff Singer at The Jewish Socialist has a very intelligent take on its shortfalls. Reproduced here by Jewschool.
David Kelsey of the Kvetcher points to the same article as an intro to his book Kiruv Stories. Nor is this the only site of its kind. Off The Derech is a term that means off the road, but has the connotation of someone who has become less traditionally observant than they once were. It is also a site for former Baalei Tshuva*** to talk about their experiences, and also the title of a book about the same phenomenon.
If you take a quick look around the internet, you will find the requisite "Aish changed my life" stories, but also a fair amount of reactions like this from Gil Landau, and this from NFOSS.
And of course, as it is necessary to raise the tenor of the discussion, I leave you with this:
*FFB: Frum From Birth, born and raised traditionally observant
**Kiruv: outreach, often misused grammatically which ticks me off
***Baalei Tshuva: lit. those who have returned, people who were not raised traditionally observant, but chose the lifestyle later in life, often are very, very observant