write in my journal at least once a week for a year

i used to be so good at journalling. in high school i took my journal to school with me everyday and i wrote whenever there was downtime in my classes. as a result i have gorgeous, colorful, amazing books of memories that i wouldn’t otherwise remember. but ever since then i just suck at it. i miss it. running and writing are the two things that make me feel the most whole. i still write - i have a blog - but i don’t do it physically, on paper, really ever anymore. i need to get into a routine with it but at the same time you can’t plan when to write; it has to strike. so i’m not sure how to go about this.