Its very difficult to understand the top down view sometimes, or the view of someone in a lateral position. I used to fight against decisions I thought were bad too much. I try really hard to understand their perspective these days- its still a struggle, I am not always successful. To be honest though, instead of getting emotionally invested (and pissed off), its super helpful to say "ok, this is not what you would do. Lets step back and try to understand their circumstances as to why they are doing this?" Immediately everything becomes depersonalized, and its just a system to model and understand how to put your input into it to try and get the outcome you want. My stress and emotional involvement go down, happiness goes up.
I personally found it very difficult to start actively empathizing, but its really helped, and I feel is what will take me to another level in terms of leadership.