When my last Dc started secondary school in September I went back to work FT having had a lovely but admittedly fairly leisurely few years working PT and raising the kids. I secured what I thought was my dream job but I feel like I'm failing at everything
The hours are long so by the time I get home I'm tired & irritable plus I feel like I'm constantly spinning plates & they are all about to come crashing down!
I can't be arsed to go out or chat on the phone for hours so friends and family are being neglected; the house is a pig sty (slight exaggeration but it will never be as clean or tidy as I'd like); my kids are left to their own devices until we get home at 7 so aren't doing anywhere near the same amount or putting in the same effort with homework; my relationship with DH is not what it was as I feel like when I am at home I'm either moaning about work (very pressurised environment and my boss is a dick) or nagging about chores/homework/meals; I can't find the time or motivation to run anymore I've gained nearly a stone in weight and feel permanently sluggish. And it turns out I'm not even that great at my job anymore 
So AIBU to just hand in my notice despite being there only 8 months? My contract has a competition exclusion clause so no chance of staying in the industry for a year+ which I'm not bothered about but no other skills to speak and we do need some income albeit not as much as I'm on now but no other clue what I'd do.
I just feel like there's more to life than work but scared (& embarrassed) to quit after such a short amount of time as it took me a while to go back to work and find what I thought was the perfect job and I know my friends and family were so proud of me and impressed with the new 'career girl' and I can imagine DH in particular being really disappointed as he saw it as a fantastic new beginning for the whole family. But I hate the new me 