塔爾博士畢業(yè)于哈佛大學，他擁有心理學碩士、哲學和組織行為學博士學位。他所開設的“積極心理學”和“領袖心理學”，被哈佛學生們推選為最受歡迎率排名第一和第三的課程。選修這兩門課程的哈佛學生超過了總人數的20%。

我們來到這個世上，到底追求什么才是最重要的？塔爾博士堅定地認為：幸福感是衡量人生的唯一標準，是所有目標的最終目標。

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Harvard
Positive psychology, studying it, applying the ideas to my life has made me significantly happier. It continues to make me happier. And it was when I realized the impact that it had on me that I decided to share it with others. That's when I decided that I want to be a teacher and teach this field. So this is positive psychology, psychology 1504. And we will be exploring this new, relatively new and fascinating field and hopefully we will be exploring more than the field, ourselves. When I first taught this class was back in 2002, I taught it at a seminar and had eight students. Two dropped out, that left me with six. The year after, the class became slightly larger, I had over 300 students. And then the third year when I taught it, which was the last time, I had 850 students in the class making it at that point the largest course at Harvard. And that's when the media became interested.
研究積極心理學并將其應用到我的生活中，這明顯使我變得更幸福了。并且讓我繼續(xù)幸福下去。當我意識到這些發(fā)生在我自己身上的影響時，我決定將它與別人分享。于是我決定要成為一名教師并且教授這個領域。這就是積極心理學，心理學1504課程。我們將探索這個相對新興并且引人入勝的領域，希望我們能從中悟出領域之外的東西—我們自己。我第一次教這門課還是在2002年，我當時教的是研討班，只有8個學生。還有2個人中途退出，只剩下6個學生。1年后，班級規(guī)模稍微大了點，我有了300多個學生。然后就是第3年，也是我最后一次授課，我有了850名學生，以至于它成了當時哈佛最大的一門課。于是媒體也感興趣了。