Hard determinism is a belief that everything that happens in our lives – including the choices we make – is determined by things that have already happened. This means that even though you might feel like you have the ability to choose what you do, those choices are actually being chosen for you by your past experiences, culture and environment. In other words, you can't really make choices – it's just something that happens to you. To put it simply, hard determinism means that your life is pretty much set in stone and things like free will or changing the course of your life are impossible.