Looking on the internet deeply has found these results:

i will write it in my diary is the most popular phrase on the web.

i will write it on my diary 10 results on the web	i will write it in my diary 13 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	ing a writer: �I will remember, I will write it in my diary�. This sentence, in which the third person narrative shifts to the first person, is followed by the brief notation�... ... of being a writer: �I will remember, I will write it in my diary�. This is followed by an outline of a scene observed from the room on the roof top (bars{aa}t{ii}): �Bitti�... ????6???5. Talk with�... When I want to express my life or something, I will write it in my diary. Diary can help you expand words more. ??????

i will write it on my diary

10 results on the web

i will write it in my diary

13 results on the web

More popular!

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

ing a writer: �I will remember, I will write it in my diary�. This sentence, in which the third person narrative shifts to the first person, is followed by the brief notation�...
... of being a writer: �I will remember, I will write it in my diary�. This is followed by an outline of a scene observed from the room on the roof top (bars{aa}t{ii}): �Bitti�...
????6???5. Talk with�...
When I want to express my life or something, I will write it in my diary. Diary can help you expand words more. ??????