Short essay answer, help!!?

Question

There are certain circumstances which one never expects. On August 2006 nor my family or I ever thought or expected that my sister would be diagnose with kidney failure.

I never imagined that someone so close to me, could be dying and I felt guilty. She had told me so many times that she felt ill and I did not pay any attention to her. I could not do anything, and only saw how she was falling apart. There was tension on our home, my sister had not taken the news’s very well and we lived among arguments and fights.
School started and I felt like there was pressure all around me. I started to come to school late and eventually stopped caring about school. I went on like this for more than half of the school year and one day when I looked at my grade report, I felt disappointed of myself. I realize that not doing anything, would not take me anywhere, that I was not helping my sister feel any better and I regretted that. When I realize that I set two goals for myself

myself and it was to improve my grade and my attendance to school. My GPA at the end of the year wasn’t so great, it was no one’s fault I got that grade and I accepted it. I regret knowing that I could have done better, but I won’t ever regret ever having that experience.

How can i make it better? Punctuation and Grammar Check please.

Answer 1

intro - 2nd sentence] neither I nor my family ever...
2nd - diagnosed, not diagnose

1st sentence] comma after dying
2nd] comma after ill
4th ] period after home; new sentence
4th] news , not news's
4th ] amongst, not among
5th] new paragraph
5th] comma after started
6th] comma after late
new paragraph
7th] semicolon after year
7th ] dissappointed 'in 'myself, not 'of' myself
8th] period after anywhere, new sentence
9th ] omit 'that', start new sentence with 'i was not helping...'
10] omit comma after anything
10] period after anywhere. New sentence
10] omit 'that', and start new sentence with 'I was not helping'
new paragraph
11] start sentence 'I set two goals...'
12] colon at end of two goals, then
one - improve my grades, and two - improve my attendence
15] omit second 'ever'