To write a journal first decide how to write it, look for information on the topic, write entries every certain time and revise the texts.
A journal is a written record that shows the author's ideas, thoughts, feelings, etc. about a topic. A journal usually requires you to add entries every certain time or at least every time you want to write about a topic.
Because of this, I cannot help you write the journal but you can follow these simple steps:
Decide how to write it, this means choosing between pen and paper or typing in the computer.
Look for information about the topic or reflect on it before starting to write.
Register your ideas every day, week, etc.
Check the entries when you feel you are done and organize them or make slight changes to improve the journal.
