Just wanting to send a message of support. I'm so sorry for all your grief and difficulties, that must be ever so hard.
Well done for deciding to focus on your own wellbeing, that's absolutely the best thing you can do right now.
I'd suggest that you set small goals so you don't get overwhelmed or discouraged.
Start with getting your eyebrows professionally shaped, they really do make a difference. But don't go to ine of those places that leave you with two big black curves! Do your research on this one.
Teeth - there are lots of teeth whitening products that are inexpensive and effective. Not the powders, go for whitening steips. I've used colgate and crest and they're brilliant.
Nails - just keep them clean and nicely cut. You can get vinyl wraps now which people say work well and are much cheaper than getting manicures. You'll want to have a few practices but you will figure it out. Be patient with yourself as it sounds like it's been a while since you've spent any time devoted to grooming.
Hair - a good cut does wonders. I know that cost might be an issue though. Mostly what helps is to have the ends tidied as they can split and frizz etc.
When you next have a few pounds to spare, pick up a nice hair conditioning product, a leave-in one. There are lots of frizz-taming products available. In the meantime, next couple of times you wash you hair, leave the conditioner in. It'll have to be a day when you're at home for a few hours! But just wash, condition, don't rinse, towel dry, comb and let it dry off.
Weight - I feel like this shouldn't be a focus for you, it's too punitive. I think that as you start to do small things for yourself, your self esteem will grow and you'll naturally eat a bit less.
However, definitely make time to exercise. Make it a non-negotiable. 30mins walk a day until its such a habit that you can easily walk for longer. Try to work up to an hour a day. It can be split across two outings eg half an hour walk from bus stop to office and half an hour back. The thing is to develop new, healthier habits.
If you don't have trainers, make it a priority to invest in some as it'll help to make the walking enjoyable - and keep you steady/comfortable.
You don't need a gym membership or a yoga instructor; walking is brilliant.
That said, the other thing to work into your daikh routine is some sort of mindfulness whether 5mins meditation 🧘♀️ or 15mins yoga or just sitting quietly looking out the window (preferably at nature!)
All the above are low cost and effective ways to improve your wellbeing.
And once they become habitual, your motivation will grow and you'll be naturally inclined to do things that are good for you.
Food - a good way to start is to limit the number of junky foods you stick in the shopping trolley. If there not in the house, you can't eat them!
Digesting sugary and chemically-laden foods saps a lot of nutrients so if you are able to cut down, you'll notice you feel more alert and energetic.
Sleep - try to keep a fixed bedtime and wake-up time. Doing so helps your body recognise when it us rest time and your sleep will be more restorative.
Skin care - I just stick to a cleanse (cetaphil soap and water), tone (micellar water) and moisturise (nivea) routine and my skin is good. A lot of it is genetic but skin tone definitely improves when you're exercising, sleeping well and drinking plenty of water. The expensive products do little that a simple routine can't do.
All the best to you. And remember, you're worth it.x