Take a rest. Like a time out but not in a loud way or anything.
Come home fairly early. Chill a little then go to bed early.
And, I'll see you the next day bright and shining.
Coz, this is not a good way to live. It's just too boring to be feeling you're bad at your life as a whole.
Get a good night's sleep and stop magnifying the shit out of your circumstances.
Get over yourself.
You just need to suck it up and start over the next day. One day, you'll notice that you're back in control.
Act like you have no other choice but to pull this one off.
Stop being a spoilt brat and appreciate your priviledges. and start caring again.
Try giving a shit about the world that is not revolving around you but actually happening. It is called awareness.
Don't be blind about what's happening now around you in all aspects.
You'll deal how-to part later but just stick with the plan for now.
Take a rest and start fresh tomorrow.
Be on your best behavior and do it right.