I would:
* Work on the resume, get it to one page, get it polished, get numbers on it ($XX million)
* If you are in tech, de-techify your resume. No mention of java, c++, UNIX, posix, little endian or whatever
* If you are not in tech, de-acronym your resume. No mention of the "GDS Launch" or other crap people wont understand
* Work on listing out / writing down ideas related to
teamwork
leadership
ethics
challenges
strengths
* Write down your top 5 achievements in the last X years
* Find all your old salaries and company addresses, phone numbers - -you'll need them for the applications (its a pain)
* Think back to your college days, write down all your extracurriculars somewhere. Prioritize which ones you actually did a fair amount in and try to estimate what dates you actually were a member (some schools ask)
* Look at schools you might not think to look at, you might find surprises
* Order transcripts now (no point in waiting)
* Transfer those transcripts to an excel file (again, no point in waiting)
* Order nice resume paper and a folio if you dont have one (again no point in waiting)
* Dont buy a suit yet, you might gain or lose weight
* Identify your top 3 or 4 recommenders if you can, think about who they will be
* Buy a calendar or print one out online
* Map out the deadlines you know (if you dont know it, use this years dates as a guideline) on that calendar
* Work backwards from that timeline
* If you havent taken a practice GMAT take one beginning to end, no cheating, no pausing, no skipping the AWA.
* If you do 'poorly' given your target schools, start looking at
manhattan gmat, princeton, etc (personally, I recommend Manhattan)
* If you have a weak undergrad GPA, consider signing up for a stats or accounting class through your local (accredited) university or through the UCLA online program. Make sure you get an A.
* Check half.com and ebay for your gmat books, this is a good time to buy them as people start to dump them post-admission. Used is much cheaper than new.
Thats all i can think of right now