Did he give up or keep on trying?

他是放弃了，还是在继续努力？

《柯林斯英汉双解大词典》

He often encouraged himself by saying "If I keep on trying, I'll make even greater progress."

他经常鼓励自己说，“如果我继续努力，我会取得更大的进步。”

youdao

We should keep on trying with confidence ourselves even after we have experienced failures in life.

即使我们在生活中经历了失败，也应该充满信心地继续尝试。

youdao

But I have been trying to keep abreast of what is going on and I will do the best I can."

VOA: standard.2009.06.30

Now you keep on trying and because the reinforcement is intermittent you don't expect it as much and so your behavior will persist across often a huge amount of time.

你会不停的尝试,因为此时的强化是间隔强化,你并不会抱有很高的期望,因此，你的行为,通常会持续相当长的一段时间。

耶鲁公开课 - 心理学导论课程节选

but I think my advice would be just to keep on trying, really.

但是我想我的办法是坚持下去，真的。

要继续努力 - SpeakingMax英语口语达人

We got to keep on trying things until folks are back to work and the economy is growing again.

WHITEHOUSE: President Obama on the American Jobs Act in Millers Creek, North Carolina | The White House

Choi I've made a significant accomplishment, and I plan to keep on trying to put on a better performance every time.

CNN: Interview with K.J. Choi

So I plan to keep on trying and I think it's important to the fans to keep on putting on good performances.

CNN: Interview with K.J. Choi