Step 2.1: Gather your emergency supplies. You know, the usual: a nice bottle of fine wine, a six-pack of beer, and a year's worth of non-perishable snacks.
Step 2.2: Build a bunker. Preferably underground, with a nice view of the ruins.
Step 2.3: Stock up on canned goods. Canned beans, canned tuna, and canned laughter (because, let's face it, things are gonna get weird).
Step 2.4: Write your will and make a nice, heartfelt speech for the survivors who'll be reading it after you're gone.