Get started: Your checklist.
Here is your starting place. It is amazing how the simple act of writing something down, and giving yourself a deadline, will get you that much closer to getting it done. The get your shit together Checklist is a handy summary of the key documents and tasks covered on this site.
Do it now:
Start here and use it to track your progress as you get your shit together. Take it from the top, and check off as you go. Download your Checklist.
Important details change when you get married or divorced, move, have kids, switch jobs, etc.
Major life event = time to recheck your checklist. Scan it once a year to make sure everything is up to date.