Success never seems to come but through hard work, often physically demanding work at that.

成功不通过努力工作似乎是无法取得的，而且往往是很耗费体力的工作。

《柯林斯英汉双解大词典》

But through hard work in practicing my mouth and transcending myself, one year later, I suddenly could speak idiomatic American English.

但通过拼命的练嘴和不断的自我超越，一年之后，我却能讲一口纯正的美式英文！

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But through hard work in practicing speaking English and breaking away from the traditional grammar games I found myself a totally different and exciting new world.

但通过刻苦操练口语摆脱传统的语法游戏，我发现了一个崭新的、令人激动的新世界。

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In its conviction that "change" isn't effected through rhetoric alone, but through the hard slog of campaign work, persuasion, inspiration, inclusion and good old, bad old politicking, "Milk" says something about how progress is achieved in America.

CNN: Review: 'Milk' is a terrific film

We were sent here to make what difference we can, to secure this nation, expand opportunity, and uphold our ideals through the hard, often frustrating, but absolutely necessary work of self-government.

FORBES: Full Text: President Obama's 2013 State Of The Union Address

Personally, being the son of immigrant parents from Belarus and myself being born there, I knew no other way, but to work hard, stays disciplined, and persevere through energy.

FORBES: Crowdfunding for Makers and Artisans with IndieGoGo