Exploring the No Difference Between 'All My Life' and 'All of My Life'

Practically speaking, there is virtually no difference between the phrases “all my life” and “all of my life”. Both phrases indicate that the described event or period has been continuous throughout the speaker's entire existence.

While the phrase “my whole life” can be used unproblematically as an adverb, “all my life” is more commonly used as a noun when referring to one's entire existence. The inclusion or omission of the preposition “of” does not significantly alter the meaning of the phrase.

Are There Any Differences?

While initially, you might assume there could be a subtle difference, upon closer examination, it is clear that there is no meaningful distinction when “all” is followed by a possessive adjective. In other words, “all my life” and “all of my life” can be used interchangeably with the same meaning.

To create a more concise and rhythmical sentence, some style guides recommend omitting the preposition “of”, but ultimately, it’s a matter of personal preference and the flow of the sentence.

The Grammar Rule of Thumb

According to a language usage page about “all vs. all of,” the choice between including or omitting the preposition “of” depends on the type of determiner preceding “all.”

Here are some of the rules:

When “all” is a determiner and the next word is a personal pronoun: “All of you were late to class.” “All you were late to class.” (This is incorrect) When “all” precedes another determiner, including the definite article, and a demonstrative or possessive adjective: “All of the students overslept.” “All the students overslept.” “All of these students were late.” “All these students were late.” “The students lost all of their homework.” “The students lost all their homework.”

As you can see, the inclusion of “of” is optional in most of the cases, but it adds clarity and emphasizes the different possessors or descriptors used in the sentences.

A Musical Bonus Feature

Here is a musical bonus feature for those who enjoy a bit of rhythm while learning:

Line 1: All my life, I've loved the soundLine 2: Of the sea, so clear and profoundLine 3: In my whole life, it's been with meLine 4: Always there, I can't help but feel

These lines illustrate how both “all my life” and “all of my life” can be used in different contexts to convey the same poetic sentiment, bringing to life the consistency in their meanings.