帮我看看有没有语法错误

有! 我已经给你改过来了.
People often say,nobody is perfect,i agree ,but there are many pressures in society.Nobody does't want to do something better than others,and nobody don't want to make every detail perfect.So,many people spend lots of time doing something better,even all his life,but sometimes what they obtain,is less than what they`ve lost.I want to ask:Is it merit?The human life is so short,why not spend more time enjoying the leisure and carefree sunshine? Nobody is the best,because diamond cut diamond ,nobody is sure Liu Xiang runs the fastest;and nobody can do perfect ,like the delicious and perfect apple in the story of Snow-White ,but it's the poison of the empress's!
What is the "perfect"?Is it the hymn of others?No!Actually,when you do every thing ,dont pay attention to the result ,you just finish your job and you can tell yourself:"I did it myself"and this is the "prefect"! Like this article I write!

个别词拼错aree- agree.do't-don't.等~
还有没有persons,复数只用people!