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. The list of things to concern us is long and worrisome; Donald Trump leading the free world, a nuclear-armed North Korea; an increasingly fractious Brexit process and looming cliff-edge, to name a few.

The natural extension of this is to worry about what the impact of all this uncertainty will have on your portfolio and in turn, on your future wealth and expenditure goals. The first mistake is to believe that the world is falling apart around our ears. The second mistake is to think that the portfolio needs to be repositioned to mitigate these events. There are five key reasons why portfolio tinkering is unlikely to be a sensible course of action:

Reason 1: today’s ‘unprecedented’ turmoil is no different to how it’s always been

Today’s worries dominate our thinking; but can you remember what you were worrying about a year ago, or two years ago? We need to acknowledge the relentless upward trajectory of purchasing power for those patient enough, and disciplined enough, to stay the course.

Reason 2: bad news sells – don’t ignore the underreported good news

The Office for Budget Responsibility (OBR) delivered a ‘gloomy’ forecast for growth of ‘only’ 1.4% for 2018. Yet, the UK economy is still growing; remember too that this slow down comes after a period of growth that has outstripped much of the developed world – particularly the rest of the EU – for the past few years.

Reason 3: the danger of conflation of ‘what ifs’

The human mind likes stories and in themselves these stories may lead to what appear to be rational outcomes on which some action, or another, could or should be taken. What we often fail to realise is that the seemingly logical outcome is highly unlikely; we have failed to multiply the probabilities of each sequential outcome together.

Reason 4: the futility of futurology

Futurology is the financial markets’ version of astrology. There is a huge industry out there from the IMF and the UK’s Office for Budget Responsibility (OBR) to investment banks, academics and BBC reporters all peddling their own view of the future. Sadly, they are nearly always wrong in their predictions, and are rarely held to account for their poor forecasts.

Reason 5: the framing of data

As we all know, data is used to score points in support of the data-user’s viewpoint. Be aware that simple statements of fact can be both very influential and misleading.

It is normal to be worried about the potential impact of what is going on in the world and how this will affect markets. The reality is that you are not alone; in fact, all active investors have some view on how Trump, Brexit, Merkel’s problems in Germany, or the Federal Reserve in the US – to name a few – will impact bond and equity prices. These global, diversified view-points are already reflected in the equilibrium price of securities, agreed freely between buyers and sellers.

Your portfolio should be already structured to manage uncertainty. Well-structured investment portfolios seek to ensure that any market conditions can be weathered in the future, whatever drives these storms.