I no longer work at the moment but I can't say I had those sorts of worries, I was in a stressful job with somebody I worked with but I enjoyed every moment of it because I knew I did some good out of it. I was a care worker in the NHS where I looked after the elderly or sometimes vulnerable youth and I am proud to say I did make a difference. Sadly I was laid off due to cuts and not being able to maintain that professional distance (it's hard to not care about people).
Judging by your posts, I am assuming you live in the UK. If your financial worries are to a point where it might not be enough, consider looking into state support. (Don't be ashamed, the system is there for a reason and you have a right to benefit from it) I would also recommend contacting your local Citizens Advice Bureau for any additional support. You can only do so much and everyone should acknowledge and understand that.
I sincerly hope everything works out for you and I wish you the best of luck.