Avoid unnecessary arguments
When you defend a position too vigorously, especially when it is just to "win" the argument, you invest our ego into it. This is not conducive to the easy acceptance and use of new information. In other words, you put your mind in a rut, and you dig it deeper with each argument. Debate can be a valuable thing, but when the ego takes over, the mind closes a little. This is not a recipe for better thinking.