Making sSome Changes

I am frustrasted right now.

Actually, I've always immersed myself in balame myself wifor the my faultistakes that happened in my life, but never know——understood why I always flawmade these mistakes (in how I do things).

You can leave off this part: "in how I do things"

Until this moment ,f. Finally,I I've unveiled the truth, witch onhich, at the bottom of the riddle , is that I always takepay attention to the counts(quantity?) of what I did, instead of the D(deliverable Q) quality.

I didn't understand what you meant by "counts," but I am guessing it might be "quantity" since it is often something compared with quality.

Without additional context, I don't see why "deliverable" quality is needed

What counts most is "consciintentions", but I,put use my enthusiastic in the misguided pathm the wrong way.

"Conscientions" is not a word, but maybe you mean "intentions?" Or possibly, "effort."

I found it hard to keep "misguided path" and still sound natural with your phrase; I changed it to something that means the same thing

Thanks to my management teacher, Gang Wei, I check toam (analyzing / working on) my faults through his course.

Two potential options:

I am analyzing my faults = understanding the faults
I am working on my faults = taking actions to correct or address the faults

He taught us,al that attitude is the most important thing in our lifeves, and showned us the alttitude of" "being conscientious" by hisusing his former students' homework in former.

I'm not sure I understood the end, hopefully I edited to your point

And I was amazied by their zealous,byness, their earhonest,byy, and their persievereance.

No need to repeat "by their" each subsequent time. "Zealous" and "earnest" are both adjectives; here you need nouns.

If I want to do something, the most important and thehighest priority is to find out my althe correct attitude, and then I can achieve my goal.

It's the mostThey are the simplest words, but I only just realiszed that up to nowis.

Adjectives that take -er and -est suffixes never need "more" or "most," because it's already built into the word. If you use the plural "words," you need the plural "they are"

My tTears are welling up, in me, why?

More natural