Depends on how far off it is-- within the next 5 years, I'd probably abandon any long-term goals, and focus on things that will make myself and others happy in the short term. 50+ years in the future? I'd probably go on as I am, and start making preparations as I approach the date. In between, it would depend on exactly how much time I had.
In any case, I'd probably try and get someone to start a betting pool for "the date of purplemuse's death" to amass a large sum of money for whoever gets stuck with any financial responsibilities I leave behind.
What would you do if you woke up one morning to find you had grown a prehensile tail?