I think that's just part of life. There's up and downs but that's kind of what molds us to be better. Just go through the process you'll make it through. If you're exhausted take one day off in the week to mentally reset and prepare yourself for the next week, usually the best day for this is Sunday. You got this, you're not alone in this. There's a lot of people struggling out there and if you think about it, you're not in the worst situation~. There's others that are living on the street, getting abused by their partner etc so I think if you think of it like this, it's not that bad right. At least you have some optimism which is good. Things will get better!