Ask yourself what it is about your job you don't like, and whether you can realistically change this. For example you are unlikely to find a job where you get paid millions for 3 hours work a day. But it its the nature of what you do that you find uninspiring, try to think about what you would find rewarding, and what steps you could take to get there.
A good book to read is 'What colour is your parachute?'
About 5 years ago I left a job I used to love wich I'd become bored with. I wasn't sure what to do next, so I went and ran a ski chalet for 6 months, then volunteered in Peru for 6 months. I save the money by working a second job a couple of evenings a week for 6 months. My now husband took loans which he's still paying off - wouldn't advise that option.
The time out helped me realise that I was int he right sector, but wanted a different role within it, which I managed to find. However the hours wwere long and the pay rubbish, even though I loved the actual job.
So this time last year I went freelance, in order to carry on doing work I enjoy, whilst making sure I get enough sleep, time with family, time to run and socialise etc. It's definitely been the right decision for me. I struggle to turn down work as I don't know when I'll be asked again, so it has been times of feast and times of famine, but the irregular pattern suits me very well.
Good luck.
