With a strong determination to succeed, I have made sustained (and stable) progress in my studies.

怀着对成功的强烈决心，我在学习上取得持续(稳定)的进步。

youdao

This become unforgettable, this experience tells me a simple and deep meaning. That makes me understand that if we have strong determination, we will eventually make achievement.

这一件最难忘的事，告诉我一个简单而深刻的道理，世界上很多事情，只要我们有决心，就一定能取得进步。

youdao

You need to have self belief and have a determination and a strong team spirit.

BBC: The teens training for Army life