Schurrle left Borussia Dortmund after cancelling his contract on Wednesday and was expected to look for a new club.
But the 57-cap Germany international, who helped them to World Cup glory just six years ago in Brazil, has opted to hang up his boots.
Schurrle told Der Spiegel: "The decision matured in me for a long time" before saying that: "the depths became deeper and the highlights less and less".
"I don't need the applause anymore," he added in a lengthy interview.
"You always have to play a certain role in order to survive in the business, otherwise you will lose your job and you will not get a new one."