Quentin Tarantino has said the poor box office performance of Death Proof impacted his confidence as a director.The 2007 action-thriller stars Kurt Russell as a stuntman who murders young women with modified cars. The film grossed only $31million (£24.9m) at the box office on a budget of $30million, which is considered a failure compared to Tarantino’s other works.Speaking to Spanish outlet Diari ARA to promote his latest book Cinema Speculation, the director explained how the film’s poor reception led to him receiving more project proposals from Hollywood.“I have been lucky enough to write stories that have connected with many people, and this has allowed me to practise my art without restrictions that most filmmakers have,” Tarantino said.“Now, a funny thing happened: for a while I was getting a lot of project proposals, until the studios ended up assuming that I do my stories and it wasn’t worth the effort.