Step 1: Find your teenager's motivations for wanting to get organized
Your teenager's disorganization can have effects on all aspects of her life. It could effect her academic performance, finances or even relationships with her friends. Help your teenager find reasons for wanting to be organized.
Step 2: Acknowledge organization no matter where it stems from
No matter how messy and disorganized your teenager might seem, there is undoubtedly an aspect in her life where organization prevails. Acknowledge areas or situations where your teenager is organized and encourage her to apply those skills to the other aspects of her life.
Step 3: Do not deprive your teenager of her belongings
Allow your teenager to sort out what items are important to her and find a suitable place for them. Do not senselessly throw her "stuff" out the door.
Step 4: Reward organizing accomplishments
If your teenager manages to achieve her organization goals, have a reward ready for her. Extending your teenager's curfew or allowing her to commit to an additional activity might be good examples of suitable rewards. It also shows your teenager that you have trust in her.