It is an inevitable part of investing that at some point markets will fall by an alarming - if not unexpected - degree. We haven’t seen large market falls for a decade. We should expect that we will. When, and in what magnitude, no-one knows.

Modern life provides us - some would say swamps us - with so much news, information and punditry, which focuses on the here-and-now, that it is easy to be overwhelmed with the feeling of doom and gloom.