You can significantly change your lifestyle and decision making process that will lead to behaviours that reduce your footprint.

... or were you looking for an answer like "buy some carbon offsets"?

I really don't want to pick on the parent comment, but the question seems like "Is there an easy way to effect meaningful, systematic change?"

I hear a lot of people talking about this and related issues but the things they propose are just not going to get it done. No one wants to stop traveling, drive less, eat local produce all winter, give up a globalized supply chain and their current lifestyle; meanwhile the frog is being slowly boiled alive...