there are 10 basic laws of time number one…
Keyword time there are 10 basic laws of time number one time can be neither created nor destroyed. Number two nobody gets more time in a day than you do. Number three time isn't money, it's your life. Number four the value of time is created by opportunity and choice. Number five when time is lost it can never be reclaimed. Number six time invested in planning preparing an organizing is vital to making the most of your time. Number seven you can always begin where you are. Number 8 identifying your personal time wasters lead to mastery. Number nine time seems to expand when you set limits. Number 10 the secret is to enjoy the passage of time.
— from Time
In the book
The grand abstraction "my life" is nothing but the sum of a few thousand ordinary days, spent one at a time. There are, the old teachers said, basic laws governing time, and the first is that it can be neither created nor destroyed — you cannot manufacture a single extra minute, only choose what to do with the ones you are given. How you even see time quietly shapes how you spend it; but however you see it, the plain fact stands underneath: your time here is brief, it is passing as you read this, and within it you still have real options about what to do. — Time