Generally, feelings such as jealousy and anger are born because people draw a line between themselves and look at them as separate beings or enemies.
Dogen Zenji is described as “self” and “other self.” Others see themselves as well.
First, let's stop the long-standing habit of thinking and grasping things with our heads. When I look at people, I compare them to myself, link them to past memories, and don't label them, saying that this person is a bad person because they did that kind of thing, etc., and I only look at that person who is in front of me right now. It's important not to look blindly.
This way of looking at things through one's own thoughts creates trouble. You have to know that you existed before you thought.
To that end, follow the function of your body to see, just listen, just feel, just smell, and just taste. It's just there. Even if a thought comes up, don't catch it and leave it as it is. It goes away on its own. When you catch your thoughts, they turn into jealousy and anger, and you suffer.
Please be aware of such things in your life.