He was educated in the monastery of the Annunciation in Rudnik. He joined the insurgents at the very beginning of the First Serbian Uprising in 1804.When Tanasko Rajić heard about the upcoming Orašac Assembly, he took his men and Janićije Đurić and went to the Stragari "han" (inn) where they killed the innkeeper ("hanadžija") and razed the inn to the ground. Janićije Đurić participated in the Orašac Assembly on 14 February 1804.Karađorđe was elected supreme leader ("Vožd"), and Janićije Đurić was elected his secretary, which he remained until the collapse of the First Serbian Uprising. He immediately wrote nine letters in Orašac, in which Karađorđe called on important people to join the insurrection against the occupying forces. He had a family relationship with Karađorđe [5] and had a great influence on him.Karađorđe used to call him "Janja" (instead of Janićije).