我写了一段英文,大家帮我看看有没有语法和用法上的错误呗!

我写了一段英文,大家帮我看看有没有语法和用法上的错误呗!
Finally,I did these things,on the one hand is to develop your own skills,On the other hand is that you can contribute to society.Do not complain,I do everything good for you; Do not doubt,you will understand what I practices in the future how wise; Do not let up,your future is competitive.Your progress showed me all the efforts you’ve made and I’m really proud of you!Someday you'll understand my love for you is how deep,multiple!
最后,我想说我所做的一切,一方面是培养你自身的能力,另一方面,是让你们可以为社会做出贡献.不要埋怨,我所做的一切都是为了你好；不要怀疑,你以后会明白我的做法是多么明智；不要松懈,你的未来是竞争激烈的.而你的成功也会让我为你而骄傲!总有一天,你会明白我对你的爱有多深,多重!