It's not that grim OP. though it sounds as though you are currently feeling very down with life and work in general.
I think you need to take a bit of time out, a couple of hours and sit down with a sheet of paper and some nice pens. Have a think about what personal and work goals you would like to achieve in the next month.
Don't make them too ambitious, keep them achievable but needing a bit of effort.
Could be : clearing out clothes, donating to charity and Marie kondo ing your knicker drawer.
Making an effort to exercise more, get off the bus two stops early, try to increase your daily step total, buy a hula hoop.
Tidying up your work area at work, asking your manager for a chat to discuss your next steps, digging out your cv and asking a trusted friend to help you revise it. Making sure your next contribution to a team meeting is a positive comment not a moan.
Try to develop a positive attitude to other people, let someone in front of you in the supermarket queue, smile and say good morning to a familiar face at the bus stop or train station.
I have recently been looking at bullet journals, I think if I had known about them when I was fed up with work and home I might have given them a go, seems to be a good way to celebrate, record and remember the little good things in life that all too often get lost under the big nasty stuff.