Hi everyone, thanks for your replies. As @GinSwiggers deduced, I've been at work all day and unable to post until now.
To clear a few things up:
The TV licence is £29.08 because for the first six months the payments are higher. They reduce to the standard £14.50ish per month after six months, and I haven't reached that yet. It's also categorically not an option for me that I would just watch TV without paying my TV licence - that would go against all my values and own sense of integrity.
I always use comparison sites to secure the best deals. For the home insurance, I live in NI which unfortunately has the highest home insurance prices in the UK. This news article from earlier this year states that the median home insurance price in Northern Ireland is £427, which means that my policy isn't excessively out of that range.
I can't go without the counselling because, as some posters have pointed out, I wouldn't be able to work or function without it. There is a long waiting list for the 6 CBT sessions that the NHS offers in my area and personally I don't believe it would meet my needs anyway because I've experienced a lot of trauma in the past that I'm working through.
The car parking costs £3.70 per day for a car park that is 15 minutes' walk already outside the city centre where I work. A monthly train ticket would be £113 per month so actually costs more and I would still need the car to drive to my local train station. I may have overestimated slightly the £150 per month on petrol but it is at least £100 because it costs £50 to fill my tank and I'd be doing very well to make it to two weeks before I need to fill up.
The fridge I need to replace is an integrated fridge/freezer because that's what was in the house when I bought it. There isn't really space for a separate freestanding fridge. I've been quoted £460 for the replacement fridge and then £70 for removal and installation. I want to look myself for a cheaper fridge but from a quick look online already I get the impression that it's going to be several hundred pounds at least.
Those who stated that I can't really afford to have a dog are right, but unfortunately I had to take him on because he was originally my mum's dog and there was nowhere else for him to go. It's such a shame because he's a lovely wee dog but I've been on waiting lists for various rescues and shelters since June. I've been told that because there is such a demand for spaces, they won't be able to offer me a space until next year at the earliest.
The clothes and shoes - I haven't bought any for at least six months but the one pair of trainers I own and wear most days are getting really worn out. I have three outfits for work that I rotate and I need jumpers now that we're coming into winter. I'm definitely not a shopaholic and I don't care about brands, supermarket clothes are great because you get clubcard points too.