Why changing is so difficult?

             This question is part of my daily life. When an organization approaches me to change their manufacturing system and I suggest some steps to do it, this question arise into my mind. We want everything to be perfect but we are resilient to give our efforts in process of change, many of people approaches me for implementation of lean see me as the magician who with no effort can change the things around. This makes me think that why people don't have that zeal to change themselves? I am still trying to find out the reason behind it though I have heard and figured out few reasons. 

           Primarily what I see as reason for reluctance is human psychology to not to leave their comfort zones, though those comfort zones are causing them losses or harm people don't want to come out of it like an addict. They don't want to come out of it to see something new, for them it's good to be behind time but not good to leave their atmosphere where they feel they are unbeatable.
            Another reason from my view is their insecurity, many people feel that current system and set-up is just for them and if anything happens to this they may loose their importance. This thing I have seen mostly in people of my region working as factory in-charges. This let them bind into same old inefficient mechanism, where they work too hard but nothing progressive.
             One more reason I came across is laziness, there are people who love the change in things around them but they don't have that passion to do, they expect some miracle to happen. Well I find majority of people around me in this category. We always praise governmental systems of Europe or Middle east but when same guy is asked to walk to dustbin and throw garbage into it, he will simply deny and throw it anywhere. For the centuries we have this mindset, we wait for 'Avtars' of God to change the society, we waited 190 years for Britishers to leave our nation instead of constant resistance.
            Now what can be done to change this mindset of reluctance to positive change? Well answer from my side is change in current system of education and strong will at core of politics. In current scenario both options sound nearly impossible as there will be many hurdles to do so. But our nation needs it, we are people with higher logic and to nurture that logic we need institutions and infrastructure.I wish within span of a decade we can see these changes or else I must say that I will do something from my side to contribute in this.
            Friends I would be happy to know your views on it, do share what you think as I believe that healthy discussions are platform for big ideas to evolve.