How someone break their self from staying up late at night? when they have always done it all of their life.

Change behaviors: . Keep regular bed & wakening time (even weekends). Get up same time daily. 2. Use regular, relaxing bedtime routine: warm bath / shower, aromatherapy, reading, or listening to gentle music. 3. Sleep in dark, quiet, cool room w comfy mattress & pillows. 4. Bedroom only for sleep & sex. Put work materials, computers, & TVs in another room. 5. Finish eating at least 2-3 hrs prior to bed.