Why you must avoid these 3 costly investment mistakes in 2019

Harvey Jones says you need to cut out the mistakes if you want to get richer in 2019.

The content of this article was relevant at the time of publishing. Circumstances change continuously and caution should therefore be exercised when relying upon any content contained within this article.

You’re reading a free article with opinions that may differ from The Motley Fool’s Premium Investing Services. Become a Motley Fool member today to get instant access to our top analyst recommendations, in-depth research, investing resources, and more. Learn More.

2018 has been a disappointing year for investors, with the FTSE 100 ending the year around 10% lower at 6,750.

We head into 2019 wondering whether President Donald Trump is making a terrible error by whipping up a US-China trade war, or if Federal Reserve chair Jerome Powell is making things worse by hiking interest rates four times in a year despite the global slowdown.

Anybody can make mistakes. You can’t influence Trump or Powell, but you can take a few steps to cut out your own errors, and avoid inflicting unnecessary damage on your portfolio. Here are three of the biggest to avoid the year ahead.

1. Panic selling

If you joined the rush to sell shares in the nightmare before Christmas, which saw the US S&P 500 suffer its worst week since 2011, you would be kicking yourself as US markets jumped 5% on Boxing Day, with the Dow posting its biggest ever single day gain. Imagine selling up and missing out on that.

Private investors have to resist the temptation to sell when share prices are falling, when everybody is panicking and analysts are predicting Armageddon. Instead, you should take advantage by buying shares at reduced prices. This is a message the Fool preaches time and again, but I make no apologies for that because it is a difficult thing to do in practice. It goes against most people’s herd instincts.

2019 is shaping up to be a volatile year but don’t panic as that means even more buying opportunities. Be warned, though, buying last year’s winners is another common error.

2. Timing the market

Finding the absolute perfect time to buy or sell a share is impossible. There are just too many variables, and nobody can do it with consistent success. The wisest investors, such as Warren Buffett, don’t even try.

You might think this is odd since I have just suggested you take advantage of share price dips to buy stock, but that is a different thing. That way you are buying something that has happened, not something you think is going to happen.

What you have to accept is that you will never buy at the absolute bottom or sell at the absolute top, and you will never get it just right even as you drive yourself mad trying.

3. Failing to have a plan

Investment opportunities present themselves all the time. For example, I believe the BP and Shell share price slump is handing us one now. You want to take advantage but you must also put any purchase in the context of your overall portfolio.

So if you already have a large chunk of your invested wealth in oil and energy stocks, you may not want to buy any more right now. Or maybe you already have hefty exposure to the FTSE 100 oil majors in various tracker or actively managed funds. Everything has to fit together.

Before buying any stock or fund, you need to know why you are investing, how long for, and your attitude to risk. Otherwise you are just making it all up as you go along. Don’t be in too much of a hurry.

harveyj has no position in any of the shares mentioned. The Motley Fool UK has no position in any of the shares mentioned. Views expressed on the companies mentioned in this article are those of the writer and therefore may differ from the official recommendations we make in our subscription services such as Share Advisor, Hidden Winners and Pro. Here at The Motley Fool we believe that considering a diverse range of insights makes us better investors.

More on Investing Articles

Investing Articles

What on earth’s going to happen to the BP share price in 2026?

Harvey Jones looks at how the BP share price is shaping up for the year ahead, and finds investors have…

Read more »

Bearded man writing on notepad in front of computer
Investing Articles

Have a £20,000 lump sum? Here’s how to target a £8,667 yearly passive income

How to turn £20,000 into a £8,667 passive income? Our Foolish author explains one counterintuitive strategy to build such an…

Read more »

British coins and bank notes scattered on a surface
Dividend Shares

2 dividend stocks that yield double the current UK interest rate

Following the latest UK interest rate cut, Jon Smith points out a couple of options that offer generous income relative…

Read more »

Investing Articles

A 9% yield and now this! Check out the stunning Taylor Wimpey share price forecast for 2026

Harvey Jones has kept the faith in Taylor Wimpey shares despite a difficult run, bolstered by their incredible yield. Next…

Read more »

Investing Articles

How much do you need in an ISA to aim for a life-changing passive income of £30,000 a year?

Harvey Jones says ISA savers can transform their futures in 2026 by investing in FTSE 100 dividend stocks with huge…

Read more »

Investing Articles

My top 10 ISA and SIPP stocks in 2026

Find out why a FTSE 100 investment trust is now this writer's top holding across his Stocks and Shares ISA…

Read more »

Rolls-Royce's Pearl 10X engine series
Investing Articles

£10,000 invested in Rolls-Royce shares 5 Christmases ago is now worth…

James Beard reflects on the post-pandemic Rolls-Royce share price rally and whether the group could become the UK’s most valuable…

Read more »

Investing Articles

Will Nvidia shares continue their epic run into 2026 and beyond?

Nvidia shares have an aura of invincibility as an AI boom continues to benefit the chipmaker. Can anything stop the…

Read more »