People think our heart is our emotion, some even think our heart is our intellect, but it isn’t, our heart is our inherent nature and our most evolved sense, emotion and intellect are meant to serve that sense, not replace it, but it stands the most important and trustworthy source of inspiration we have available.
Every snippet of information we encounter is tainted by the bias of those who provide it, so unless you can figure out a way to identify the desired outcome those people have in mind for providing it then you simply have no grounds to offset that bias for the purpose of finding a reasonable semblance of the untainted truth beneath.
That is why your natural sense for blessing and suffering is vital, and it is why emotion and intellect can be tools used against you to diminish that sense if you fail to keep them in perspective. That is the ultimate confidence and esteem, the principle of keeping that sense unchained is the key across the entire board of your life.
When we observe and experience events in our lives, I believe we have a natural sense that evaluates them, based on a combination of how it may help or hinder us personally and how it may help or hinder those around us. It is pretty much instant, but given a moment for you to think about it you start to add your own attachments to it, like if you know who those others are, if you like them at all or if you love them, what you can get away with, then perhaps your conditioned cultural ideologies come into play, rationalising things like Karma and the impotence of your own ability to do anything.
So I believe a sense of justice and injustice is automatic, but when we use knowledge and emotion we can break down that sense, neutralise it if we want to, or choose to bring awareness and address it. This is basically what I am talking about here. The idea that you may not like someone because they are a dick, but becoming a dick in return is actually a contradiction to who you are in the first place to make that judgement.
I actually get that last part from Assassin’s Creed 2; Ezio caught one of the conspirators who killed his family, he killed the guy, which was necessary, but he went on to curse the dying man, but Ezio’s uncle came over and said “Show some respect” of course Ezio was confused “Respect? He showed none for my family” but the uncle said “Yes, but you are not him, do not become him”
It is really strange where I get a lot of my philosophy, a game, movies, I get a lot from Road House Patrick Swayze :p
I find the honest way to merge emotional and mental input is to bring the attention towards the physical reaction. Gut feelings and muscle tensions, etc. are how I sense my heart. The physical experience reflects imbalances.