You lost a game today where you made a big misjudgment about a position. You had a slight advantage but you saw an option to win a piece. I don't know if you saw the danger.
You spent only 30 seconds to figure out your options and when you made the wrong choice, you got blasted.
The next time you face such a choice, you might spend more time to figure out your options. You had over 8 minutes remaining in a 10 minute game. As you practice calculation, you might be able to see a little further and make the correct choice over whether or not to grab the material or choose the more conservative option.
Ah yes, here I'm again, thinking about quiting chess. Why does this keep happening.
Point is; I did this once and i didn't play for a very long time, but before quiting i had a period which i was thinking about quiting for a while. then i did it. Why? Because this game was making me mad.
First and foremost; there is no real way of making significant progress in your chess career. What have you in you, is that all you can have. It just takes time to uncover but that is all you can get. No need to struggle, it just gives you pain. You will just lose hair and mood.
Second.. mmmh I don't know what to say, there is no second, there are lotta thing i wanna say but who will care? someone will come and lecture me the otherwise.. no one will ever try to understand what i'm trying to tell here.. like no one ever had that idea before.
peace.