"I noticed myself" is a correct and usable phrase in written English.
It can be used when the subject of the sentence is also the object of the action. Example: While looking in the mirror, I noticed myself looking older than I remembered.
"I noticed myself thinking about trends," he said.
"I noticed myself being moved, drifting in a certain direction," he said at the scene yesterday.
Then I noticed myself digging the top of my shoe deep into the turf, almost ritualistically, as I stepped across the white line from the sideline to the playing field.
"Often times I noticed myself looking at an image of a celebrity on ESPN, or TMZ or some other website and wondering what type of sunglasses, or shoes, or jacket that person was wearing.
When I started going to Central High School, I noticed myself changing.
My whole week was ruined" you could say, "When I didn't hear from you, I noticed myself feeling less confident.
To this day I notice myself treating the memory and tradition of the USSR with an indulgence and a tenderness which I do not feel towards communist China, because I belong to the generation for whom the October Revolution represented the hope of the world, as China never did.
When I notice myself ruminating, I do something to distract myself from it, like read a book or watch a movie.
Lately, in my morning meditation sessions, I've been doing a mental happy dance every time I notice myself absorbed in and distracted by thought.
I now know that the "worse" my meditation session is, in terms of my mind getting distracted by thought, as long as I notice myself thinking, and gently guide myself back to breath, the better practice I'm getting.
I barely noticed myself — I had moved my own dim sum custom out to King Hua, Capital and Sea Harbour almost a decade earlier.
