There are plenty of small sayings in trading such as trend is your friend, grab a falling knife and these. I am curious to how a lot of folks are able to think of and if they think that they are useful or completely useless.
Here is a few
The Trend is your friend : Certainly, its much better, especially for new trader to go with the flow and momentum compared to try and predict a change and second guess the market.
Buy Low, Sell High : Nice in principal, but it's quite hard to accurately predict bottoms and tops of market. Often when you believe the market has reached the top and is going to reverse only to see it go higher, so perhaps Buy high, sell higher is more accurate.
Grab a falling knife If you try it, usually you get hurt, either in trading and in real life lol.
What others can folks think about, and is there any truth in these expressions?