When you're right on the verge of that feeling., ....
STOP! 
Step back or aside if you need to, have your space, roughly three foot around you. Take a deep breath and ask yourself and answering honestly. "Will this matter tomorrow? Next week? Next year? Next decade??
Remember stop is,
Stand to attention, be aware of feelings.
The point is abruptness. Get your head "out of the game" for just a few seconds or minute. Know that we all get feelings. It's alright having them visit. But, ...
Take a stand, accept feelings come and go, accept feelings.
You don't need mastery over feelings by tackling each one. Simply acknowledge them, see them visiting. Watch them head out not letting the door hit them on the bum on the way. Feelings are transient much like our time on Earh, they're passing through just as we are.
Order, get yourself orderly by thinking of forward progress, never backward.
Thinking forward means you can also accept mistakes happen. They're simply lessons. "Okay, I don't do that this way, let me try another way, ..." You stay present but realize your future self has learned from a mistake, no matter who or what caused the mistake. Neither who nor what caused it matter, all that is temporary, let it go. Stay present but look ahead.
Play the hand you're dealt using reason, logic not feelings
This is pretty self explaining. Do what you need to do and move on to the "next thing" to do. Don't over think something, not what this says. You can reduce problems down, sure. Keep it simple Sherlock, don't look for trouble, or do and learn more.
Don't force anything you're doing either. Trust the gentle way, ebb and flow of life, nature, Providence if you trek that way. These will out whatever you're trying to do.
And yeah I'm learning this one too regarding "pushing" myself through back pain. I keep forcing and well, gee golly, what ya think? Back pain getting worse or better? *chuckles*
Yes, I "feel" crappy i can only do so much at any given time. That is rough to let go of for someone like me too. I've always been a f***ing work mule, just "get it done". Plow me headlong into the grindstone. There but for pride to fall, too. So yes, I'm acknowledging my pride but also own up to humility in knowing life is leading me down its course. So I'm wearing down?
I'm told my half efforts are more than most doing full efforts. And that isn't paying me lip service to placate my pride or ego. It is expressing that's alright for me to not keep pushing, forcing. I don't need to feel crappy over it. This is how life goes for all of us.
And see? You're not alone having those
moments. What's important is to keep yourself focused on the good and better. Bet you did something today to make living in general better. I know you got good in your life too. You got people here that give a shit about you.
We know life can be harsh. In fact some of us hear life tell us "f*** you".
What do you do when that happens? Dust yourself off, stand back up, look life square in the eye and tell it, "No, you go f*** yourself!" Then, you go on about whatever you need to do. And you know you're not alone telling life to go f*** itself. A good bunch of us do all the time.
It feels good to do too.
Also remember, none of us get out alive.
So , don't get too serious. It's an amusement park ride, baby. Laugh, a laugh won't kill you.
Or will it?
And a note. No, I'm not a psychologist nor am trying to pretend to be one posts such as this. What I am though is someone who faces a lot of mental health battles, struggles in life. I'm sharing what I've experienced that works to help me, some taught, some self learned. For example I created the STOP I use above. It is in part something I was taught, modified for my use.
For me it helps, ymmv & all standard disclaimers apply. If you feel you've serious mental health issues, please consult genuine mental health care professionals as soon as possible.
