Change - Created by the Unreasonable Man ?

How do those of us who try to embrace a philosophy of doing what we believe to be good/right deal with the anger and despair that we feel over the injustices all around us?

Would you rather give the world a hug, or a slap in the face? Would you rather get up there and battle, or leave it alone for the sake of a peaceful life?

I am sure that many of us can relate to this. It isn’t just my worry, it’s a human question. 
We all fight with our anger over issues in our own lives as well as in the wider world. Often, it leads us to the depths of despair and we feel any effort on our part is futile. So we give up.
But anger is a powerful emotion, and when it is channeled properly, it can be a force used to positive affect. Rather than ranting at the world – or worse, allowing the anger to destroy us inside by keeping it hidden, we need to find a way to use it and work for change. 

"The reasonable man attempts to adapt himself to the world and the unreasonable man attempts to adapt the world to himself. Therefore, all change is created by the unreasonable man" . George Bernard Shaw

The comment is clearly a viable one - but does this persuade anyone to NOT try to change things? Conversely, does it make us want to change even more, just for the hell of it? Maybe some of us don't want anything at all to change, so do not need to consider. "The terror of change has been exceeded by the terror of remaining the same " said someone at a conference on teamwork, that I was at once.
Perhaps it's unreasonable to want to change things for the betterment of society. And selfish to want to leave things as they are, because it's 'comfortable' to do so. And who is to say what the betterment of society is? It's a bit of a subjective subject ! I wonder if "doing good" is also a selfish notion, as it makes us feel better ? I have always struggled with this, and the response from my staunch Methodist father was that "God knows who is acting for themselves and who is loving their neighbour". Sound advice to a believer, but not so easily taken in by someone with no religious faith.

So, I have to conclude that it's a personal thing, which no one can advise on or give suggestions on, but ourselves. In other words it's about conscience. What our conscience makes us do or not do might bring harsh words from others with differing views. If I have someone say that I was being hypocritical, in my views - the one thing I strive against constantly - I used to be devastated, but not any more.  Only I know the truth behind my thinking and actions. 
And only you know yours.