我想这是你多年来刻苦学习和努力工作的结果，你应当引以为荣。

It means, I believe, years of assiduous study and hard work on your part. And it is an achievement you can be well proud of.

youdao

今后我将更严格要求自己，努力工作，刻苦学习，发扬优点，改正缺点，开拓前进。

I will be more strict with myself, work hard, study hard, develop strengths, correct weaknesses, and forge ahead.

youdao

今后我将更严格要求自己，努力工作，刻苦学习，发扬优点，改正缺点，开拓前进。

I will be more strict with myself, work hard, study hard, develop strengths, correct weaknesses, and forge ahead.

youdao