Hiya Pale. Good idea coming and talking about it. Fair warning, my reply is probably going to ramble on a bit... lol
It sounds like you're really ready for a bit of a win. Most of what you're talking about is big picture stuff, and when you're in the middle of it all, looking up at such big challenges, it's going to look daunting for sure.I wonder if breaking things down into smaller challenges might be of value to your morale.
I've got a couple of suggestions, based on how I deal with my mum and manage my study enthusiasm. Firstly, make sure your mum is getting plenty of hugs. And tell her, you love her and thanks for caring. They're like magic words.. We all know it's true, but sometimes we go a long time without saying them. Be sure to tell her how you're feeling and what you need help with. You might find her to be your strongest ally.
As for the study thing. I took the advice of an old Army drill Sgt, and cleaned up my room lol. Yeah, I know that sounds cliche.. But whad'ya know, it actually worked for me. Specifically I make sure to make my bed in the morning, and I got a box and just took everything off the desk where I study. It's like in a chaotic world, you create this space that is ordered and ready for you to take care of business.. Now when things get messy in my work/living space I actually feel a bit Grrr.. And my productivity drops or ends. I don't know how good the bed thing is, but the cat sure likes it.
Anyway, I hope something in there works for you too.. It's great that you care about doing well, and if you keep putting that energy into things, you will achieve your goals. Don't forget it's only Feb. You've got time to work with here. Wishing you the best, and I hope you come back and tell us how things are going.