Sleep walking has become a norm in my late teen years. It's memorable and disrupting my sleep. What should I do?

Not much. Sleepwalking is a sleep disorder that there is not much treatment for unfortunately . When a person sleepwalks they should not be disturbed just kept from harm and guided back to bed .
Several possibilits . Many consider this a sleep deprivation disorder brought on by lack of effective deep sleep. Eliminating computer,phone,TV,radio and the like for an hour before retiring and planning for a half hour more of sleep/night may drop the frequency.If this does not help, a sleep study and work with a sleep specialist may help you. .