Hmmm, I can probably talk myself, but there is plenty to live for in life. Your friends, family, hobbies, significant other and all the things we do to make ourselves happy. I've learned recently that if things really become bleak and hopeless, you have to learn to reconnect with yourself. Heres an example, where did your parents used to take you as a child? For me, I can think of lots of places, but one of the places that stands out for me is the zoo, so I went there the other week. Not only did it help with exposure, but I got to reconnect with myself, and pet the Donkeys which was lovely.
Do you have pets? If not, perhaps a couple of small pets will help you occupy your time and give you something to focus on, whilst you're applying for new jobs.
It took me 3 months to get the job I'm in at the moment, and I haven't had the best employment record. If you got turned down for the jobs you've been applying for, its probably for the best. You may have been at loggerheads with them and quit within 3 months. I've learned the hard way a few times that if you don't get on with your colleagues, you get driven out of the job through constant prodding and bullying. Another thing you have to remember is that employers get really fussy about experience, so it may be useful, if not done so already to do some volunteer work for charities perhaps, in your preferred field.
Another option, if not done so already is to register with temp agencies to get employment of some sort and get some money coming in. I, myself have got a few temp to permanent jobs, which worked out okay and got me an income. At least from this angle, you can work your way into your preferred field.
I'm guessing that a lot of this you've done already, but I hope some of it helps
Giles