I've done this twice: the first time back in 2007 when I got made redundant and decided to use the time and money to study and indulge in my dream of writing a book; more recently (which is still ongoing) to recover from burnout and rediscover the joy of coding.

I do not consider this time to be "gap year", but rather an investment in, and a reward for, myself. Why do I need such luxuries? Because time is short and nothing is destined. None of us are guaranteed to make it to retirement age. My Dad died when he was 54; my brother when he was 53. My sister survived her heart attack when she was 60 - luckily it happened when she was at work; she was a cleaner at a hospital.

Keep a roof over your head, make sure you have enough food to live on. Don't leave it until the last minute to start looking for paid work. Most importantly, enjoy your time away from the capitalist treadmill - with good fortune this can become an investment in yourself that you'll never regret!