Krstić was born in the village of Labuništa in the Drimkol area (known as Mala Šumadija) north of Struga (present-day North Macedonia, then in Ottoman Empire) into a Serb family of pečalbari, whose work took them away from their homeland to earn for living but always kept close connections to their homeland.
Unhappy about this work, he wanted to get an education and enroll in an evening course in Saint Sava school for teachers.
Instead, he returned to Belgrade and started working as a milkman assistant with his compatriot Marko Šumenković while in the evenings he attended school lessons.
Serbian and French forces retook limited areas of Macedonia by recapturing Bitola on 19 November 1916.
Although he hesitated in 1940 he was appointed as an editor of Glas juga newspaper from Skopje, where he remained until the Nazi occupation in 1941.
His first writing, descriptions of local customs, appeared in 1904 in Carigradski glasnik, a Serb newspaper printed in Constantinople.
He also wrote a drama Zatočnici (1937) that was performed in Skopje that same year, as well as another book of short stories published in 1951.