If you were having a party and ASDA were offering champagne with a 10-20% discount, I bet you'd be down there like a shot.
However, for some reason people treat shares differently to virtually everything else. People like to buy shares when they are EXPENSIVE and sell shares when they are CHEAP.
We need to think differently. The greatest investors in the World love market corrections because this is when they maximise their future profits by buying discounted shares. The worst investors are selling them to the greatest investors.
I appreciate that if you are already fully invested, you may not have spare cash to invest and that's absolutely fine.
But if you have come into some money, such as receiving an inheritance, downsizing your home or receiving a retirement lump sum, the time could not be better.
For the majority who have not, the next best thing is buy more units through regular savings. You get more bang for your buck each time you make a monthly contribution.