living this way

Life is such a wonderful gift. We all like to live it healthy, wealthy and worthy, but this gift is sometimes got ruined because of something. Living with a disease and knowing that you will not be able to get rid of it is like having to live with a bad husband for the rest of your life. There is nothing you can do except of cope with that situation because giving up in such a case may make your life much worse. So just suck it up and pray for a better tomorrow. In the end all what you have is what was meant to be yours....

[Very good!

* You can delete "in such a case" altogether because you already said "in that situation," so it is implied in the second part: "...cope with that situation because giving up [in that situation] may..."

Usually I hear "in such a case" at the beginning or end of a sentence ("...except cope with that situation. In such a case, giving up may make your life..."). Used in the middle, it's usually: "in such a case as this," or "in such cases," etc. I didn't delete it because you can still use it that way I think.

"At the end" is okay, but "In the end" is better. "At the end" implies something after it: At the end of the day, at the end of life, etc. "In the end" is nonspecific and more common. "At the end of the day" is also sometimes used to mean "in the end."]