Rab­bi David Jaffe is the author of Chang­ing the World from the Inside Out, win­ner of the 2016 Nation­al Jew­ish Book Award for Con­tem­po­rary Jew­ish Life. In addi­tion to being a rab­bi and a writer, he is also a social work­er. He’s orga­nized home­less men in San Fran­cis­co, built refugee camps in East­ern Con­go and recon­nect­ed Boston’s sub­ur­ban Jew­ish com­mu­ni­ty to its urban roots through social jus­tice part­ner­ships. He is a nation­al­ly rec­og­nized prac­ti­tion­er and teacher of Mus­sar — the school of applied Jew­ish spir­i­tu­al­i­ty and ethics.He blogs at rab​bi​david​jaffe​.com.