FTSE is down 2.5% NASDAQ futures down 1.5% and Tesla is down about 1/3 over the last few months. It's all doom and gloom! Except it isn't. It is exactly at times like this that I remember the single most important thing I have learnt in 30 years investing. BUY LOW, SELL HIGH. It's not exactly a secret, but it something that many investors fail to apply because emotions take over. When prices are down like this, they get depressed and panic sell. This is wrong. At the other end of the scale when prices are racing ahead they have a fear of missing out and chase an increasing price higher.
With Tesla, I sold some (not much) of my holdings when the price was in the 800's and high 700's and ever since then I have been buying in small packets, as it has moved down through the low 700's and 600's. I continue to do this and picked up some more in the pre-market today @ 589. If it goes down further from here, then I'll be buying more.
I know I'm stating the obvious, but it might be helpful to some people.
On a side note, I've been buying gold over the last few months. Theoretically as a hedge against $ inflation but if I'm honest it's because I like looking at it and holding it - so much nicer than digital stuff