The script changed so much over seven months and just had loads and loads of re-writes. I tried to tailor things to what I was interested in, like the relationship with the dad changed quite a lot because I thought one of the things when you're a young guy one of your biggest fears is this irrational fear of walking in your dad's footsteps and living the same life as him. I thought, even if your dad's a good guy, you just want to assert your independence on everything and it causes these irrational sort of rages.