The success of the Harry Potter films prevented the actor from leading a normal life, and he began sinking into depression. During the shooting of the last chapter in the saga, Daniel often appeared on set drunk.

In 2015, Daniel Radcliffe admitted that he used to suffer from alcohol dependence. "When I was drunk, I became a different person. Sometimes I would wake up in the morning in an unfamiliar apartment with no recollection of how I got there. I had constant breakdowns, which led to drinking binges. Then, one day, I went for a walk, which lasted for about five hours. During that time, I never once felt an urge to have a drink. That’s when I realized that I needed to walk in the fresh air and exercise. Nowadays, I do these things every day, and I don’t drink at all."