Each season, I sit down with my bullet journal or calendar and take a look at the next three to four months. I will give this period a theme such as:
"Fall into to Winter" or
"Winter turns to Spring" or
"Spring into Summer" and
"Summer falls to Autumn"
I try to make it poetic and paint a picture of the changes in time to come. Each period also has theme colors I use to decorate them with.
Then I set up the quarter in my bullet journal. I make a calendar page with important events, holidays, birthdays, appointments, etc.
Other pages I make include:
Book list-- this is a list of books that I read during the quarter
Recipes--meals that go good with the season
Entertainment--shows and movies that I watched and completed during this time
To-do list--things that need done each quarter or are important to get done during this period of time