on one's mind

Idioms  

1. Also, on the brain. In one's thoughts, preoccupying one. For example, The book prize has been on my mind, but I haven't been able to discuss it with you. It is often put as have something on one's mind (or the brain) meaning “be preoccupied with something,” as in I didn't mean to be rude; I just have a lot on my mind right now, or John has nothing but girls on the brain. [Mid-1800s]

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Example Sentences

The game serves as a look into how living through hell can lead to a life of survivor’s guilt, wrecking havoc not just on one’s mind but on the relationships that matter most to us.

From Los Angeles Times

She adds, in a sentence that imprints itself on one’s mind like a nighttime flare: “I consider the role that good manners might play in the sphere of rat-eating, and it seems to me an important one.”

From New York Times

The very nature of public life—for that matter, of social life—is not saying everything that’s on one’s mind.

From The New Yorker

This relentless subordination of everything to practical ends—this iron determination to keep doing, even while ready frankly to depend upon his power of speaking and writing to produce conviction and popular persuasion as the means for effecting his objects, gives as the final imprint of Mr. Gladstone on one's mind that he was always meant for a Liberal.

From Project Gutenberg

Oh the inestimable blessing of having nothing on one's mind again!

From Project Gutenberg