Wise advice on time

The easiest way to increase happiness is to control your use of time. Can you find more time to do the things you enjoy? - Daniel Kahneman
Happiness isn't something you find, it's something you build with the minutes and hours of your day. The quote argues that the most direct lever for a better life is intentional time management, not the pursuit of abstract goals.
The best possible way to prepare for tomorrow Meaning Factcheck Usage

Quotes about time principles

The best possible way to prepare for tomorrow is to concentrate with all your intelligence on today - Dale Carnegie
This quote is about actionable presence. It means that the most effective preparation for the future is to be fully engaged and effective in the tasks and opportunities right in front of you, right now.