* Sitting in a beach chair gets old in one or two weeks. Use the time to skill up: spend a few hours a day building something, or do a masters degree or short term course - maybe somewhere picturesque in Europe.
* Starting up is going to burn you out more than you are now. And possibly in addition to being burnt out you will have much less money than you do now.
* You will find another job unless you quit into the start of the recession.. then you have hiring freezes all around and you might need to take a sh*y job or work with sh*y people.
* Even if the bubble doesn't pop - for your next gig its unlikely you come in from a position of strength. They WILL low ball your comp on your next job. HR scum have seen this movie enough times.
* Boredom breeds a gambling habit. Don't use your free time to trade exciting markets.
* Cut up your credit cards. Its super easy to pile up "just a months income when I get back to work".
* Put half your money into a long term investment account. Put the rest in a cash account. Never eat into that long term account. When the cash account goes to 10% of what you started with drop everything and begin searching for paid work.
* Be accountable to yourself. Try to something meaningful to show for yourself when you're done.