The increase in the rate of climate change is primarily driven by the increased emission of greenhouse gasses.
The primary driver of increased greenhouse gasses (GHG) is the burning of fossil fuels emitting CO2.
In order to stay below 2°C, we need to remain below 2900 gigatons of CO2 in the atmosphere (source: one of the ipcc reports, I forget which).
Our atmosphere currently has somewhere around 1900 gigatons of CO2, as of 2011. (corrected from earlier error.)
We are currently releasing 35-40 gigatons of CO2 into the atmosphere per year (the US releases about 5), and the rate is currently increasing from year to year.
In order to remain below 2900 gigatons of CO2, we need to reach a GHG emission rate of 0 (zero) overall within the next 7-12 years, through some combination of reduction/elimination of burning fossil fuels, and sequestering of current CO2 from the atmosphere.
Therefore, each person should strive to not only reduce their carbon footprint, but eliminate it and aim for a negative carbon footprint.