How can you not be greedy in trading?
Greed is human nature, just like gambling addiction, it is difficult to quit by yourself, you have to use some physical means.
You can treat trading as a journey, not a sprint race, you treat each transaction as part of this journey, you have to "get off" at the point, if you don't get off, you will miss a very beautiful scenery, so you have to set where to get off in advance, and get off decisively after reaching the target. This getting off point is also mandatory, don't give yourself the opportunity to hesitate and entangle.
In addition, usually give yourself some psychological hints, "less is more", sometimes exiting in time can also keep profits, don't pursue the limit, pursue more, if the market reverses, what may you lose? This kind of reverse thinking can also help you make decisions more calmly.
If you follow the trading plan and are not greedy, give yourself a little reward, such as what you like to eat and what you like to do, so that this rational choice becomes a happy thing, and it will improve over time.