How to reconcile living eco friendly with living in a capital, modern and busy society?

I just wonder sometimes that we are always telling each other to go green so as to save the nature. But we miss out on simple fact that we are so much into living a busy, modern and capitalistic life that it is quite difficult for us to switch to eco living. But still we have to find some ways to achieve it because it is quite essential to live eco friendly so as to save nature and natural resources for future. But how can we go about it? How to reconcile living eco friendly with living in a capital, modern and busy society? I would really appreciate your useful information about this. Thanks.