I, too, have been wondering how wasteful I am of the earth's resources and feel stuck in a bind.  
I want a warm home in winter and a cooled home in summer - I am trying to reduce power consumption by letting temperatures be cooler in winter in warmer in summer - but I can only go so far.  Or, maybe I will only go so far until something forces me.

I am trying to pay attention to how much water I waste - I never did bother for long years.  Can you imagine what it would be like to try to bathe in a few gallons of water and, especially if you are female, to also wash your hair?  Or what it would be like to have to haul the water from a well or empty a tub full of water?  Which reminds me, I have to buy a new hot water heater and the people I have talked to say there really is no recycling of old hot water heaters - they just go to the dump.

And, no, I don't think I can give up my cell phone.