I'm a bit cynical about all this: while it's important to be aware of the impact on the environment we all have, there's a whiff of "scare du jour" about all the coverage at the moment. Individuals can certainly be more responsible but there's so much involved in calculating the impact of any activity that your head will explode. For example, putting a wind turbine on your roof sounds like a good idea, but the little domestic ones are so inefficient that they probably had on balance an adverse effect on the environment in the energy that was consumed in making them in the first place.
I think we can all do little things that add up to a lot such as recycling, thinking about where and what we drive, etc, but for me, quality of my personal life is important and yeah, I'll probably fly a couple of times this year and I'll still use tungsten lightbulbs for as long as possible. It's a question of finding a balance you're comfortable with, I think.