Insomnia in Patients With Metastatic Lung Cancer

This study is looking at insomnia (trouble sleeping) in people with metastatic non-small cell lung cancer (lung cancer that has spread to other parts of the body). Researchers want to better understand how common sleep problems are in this group, how they affect quality of life, and what might help. **You may be eligible if...** - You have been diagnosed with metastatic non-small cell lung cancer - You are receiving your 1st, 2nd, or 3rd round of treatment, or are on maintenance therapy - You are older than 18 years old **You may NOT be eligible if...** - Your cancer is considered advanced and terminal - You have severe depression or another psychiatric disorder - You have a sleep disorder other than insomnia (such as sleep apnea or restless leg syndrome) - You regularly take certain psychiatric medications (other than sleep aids) Talk to your doctor to see if this trial is right for you.