Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to fill up a notebook [title] Commit to a daily routine. [step] Be realistic with yourself while planning to utilize your notebook. If you commit to writing in the notebook everyday, you can fill it up in no time.

Ending1: Think about a time of the day that would be best for writing. If you have a busy morning and afternoon, write each night before going to sleep. Ending2: You should therefore commit yourself to a generally routine. [substeps] Aim to write two or three daily things into a notebook each day: the first day of work, the second day of studying, and the third day of sketching. Ending3: [substeps] Get into the habit of writing every day before bed. Aim to get in bed at different times each night. Ending4: Instead, set aside one full day each day for taking the writing step up. [substeps] Set aside about 15 minutes each day to " live " your time.

Answer format: ending1/ending2/ending3/ending4