He was born in Mils in Tyrol,[1] the son of the hotelier and ski school director Norbert Gstrein (1931–1988) and Maria Gstrein, née Thurner (born 1935).
[2] He grews up with his five siblings in Vent [de] and attended the secondary school from 1971 to 1979 in Imst.
[2] From 1979 to 1984, Gstrein studied mathematics in Innsbruck, Stanford and Erlangen.
[2] He not completed his PhD (no defense of his thesis Zur Logik der Fragen) in 1988 at the University of Innsbruck, under the supervision of Roman Liedl and Gerhard Frey.
[3] Gstrein is the author of more than a dozen books, including Winters in the South,[4] translated into English by Anthea Bell and Julian Evans, and A Sense of the Beginning, translated by Julian Evans.