But what do you do when you finally realise - having ended up right back at the start again for the thousandth time - that this is it? You'll never, ever get out of this Sisyphean loop?
I lose weight, get fit and exercise loads for a few months - great. But it only works because it's my project, and it's all-consuming. You can't live like that, because there's other stuff that has to be done.
So I focus on the house and garden. Get it looking great, get loads of DIY done. But hyperfocusing on that means I can't find the space for fitness, so I lose all the muscle tone and flexibility I gained, and get flabby and fat again.
Then I need to focus on a work project which, because I'm a creative, again takes up all my time and energy for months. And everything else goes to shit.
Right now, I look and feel like shit, my house and garden look like shit and there are a million maintenance jobs getting worse by the day from the neglect.
And all that work I did on the work project may come to nothing anyway. If I don't make any money from it, I can't afford to sort out the house and garden things, and it all gets worse and worse.
I cannot multitask. I can't spend my weekends tinkering on the house and do my job in the 9-5 hours. Every time I've tried, I get overwhelmed and it falls apart.
I've been here so many times, and this time it feels worse because I really feel like I can't face this forever. But what is the solution? If I had enough money to outsource the cleaning and maintenance, I could cope, and put the required energy into my work and probably also my fitness (albeit in fits and starts, but it's better than the nothing I'm currently doing). I can't bear to keep going through this over and over again. It's not fair on my husband, I'm a dead weight.