She just won't come, what can I do about it?

她就是不来， 我能怎的?

《新英汉大辞典》

Whenever I encounter a problem, I quickly assess whether or not I can do something about it. If the answer is no, I will just forget it and move to something else.

每当遇到问题时，我就会快速做出判断，看看自己能否解决它，如果答案是否定的，那就让自己忘掉它，去做别的事情。

youdao

I have seen her fix all these things so often that I can do it just the way she does.

我看到她对所有事情都这样做，耳濡目染，终于我能按她的方式去做。

youdao

What McDonalds is saying is that if I want a Big Mac I can just do it myself.

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If I can just stay relaxed -- I really feel like I can do it, but, you know, I'm sometimes my own worst enemy.

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It's just fun to know that I obviously can do it, and I take a lot of confidence from that.

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