I love my journal although I'm relatively new to it.
I use front and back pages for different things. From the front I have a yearly goal list, a drawn out plan for the year (with birthdays, anniversaries, holidays etc on it), monthly plans, weekly plans, diary entries and brain dump pages (where I literally write down anything that's on my mind).
For monthly plans I just draw a calendar page for the month ahead, note down anything important and am still toying with having different things on the side (I've tried trackers / to do lists / goals).
For weekly plans, I like having the days down the left side so they have 3 lines each and spreading it across 2 pages which are in columns - page 1 is for anything I want to note, page 2 has columns for tracker, meal plan and to do list.
From the back, I have lists lists and more lists! There are crochet projects, bills, savings, Christmas present ideas, weight tracker, cycle tracker.
Sounds really sad written down but it keeps me on track, focused and organised and I let out my creative side by doodling and decorating some of the pages