whilst changing your own lifestyle to minimise damage to the environment and fellow humans in all ways might only make a small difference, and can be quite hard to maintain in a sea of questioning faces and a society that is geared up for consumerism, nevertheless i have found that when people observe your behaviour (rather than preaching to them), they ask about it, and often then want to know or do more. there is a psychological and mental effect to this process. in some areas it is becoming a trend to be 'green' (although trends are fickle). but above all else, if what you do is reducing your impact upon the world and improving the situation for others, AND occasionally inspires someone to at least start considering the environment or challenging the problems that lie behind the majority of global emissions and pollution, then it is a success. people generally relate best to big problems when they see how it affects, or is affected by, every day life.