You can only affect your future by what you do today.

你今天的所作所为必将影响你的未来。

youdao

What you do today, determines what tomorrow will bring.

明天的模样取决于今天所做的一切。

youdao

What do you intend to do today?

你今天打算做什么?

《新英汉大辞典》

Also,never put off until tomorrow what you can do today.

VOA: special.2011.03.27

I left out the noble gases here because they do something a little bit special, and actually, I'm going to give you one last clicker question today to see if you can tell me what you think noble gases do.

我并没有把稀有气体算在里面,因为它们的电子亲和能有点特别，实际上，我将会把这作为今天的,最后一个选择题，来请大家告诉我,你们觉得稀有气体电子亲和能应该是怎样的。

麻省理工公开课 - 化学原理课程节选

And just when you wake up, think, "Right, what do I want to wear today?"

当你醒来的时候，会想，“对了，今天我想穿什么呢？”

时尚让人兴奋 - SpeakingMax英语口语达人

Fifteen generations of Americans, our fellow Americans, many of whom are reposing in military cemeteries throughout the world are looking down on and judging what you do today.

CNN: Transcript: Schippers, Lowell briefings before Judiciary panel, part 2

What role do you play today?

FORBES: The Billionaire and the Freedom Fighter

In addition to kind of asking them to do so today, what will you do in the coming days to try to get more schools on board?

WHITEHOUSE: Press Briefing