Hello Friend, Good that you are seeking a help here. Any sleep related disorders are due to anxiety or anxious thoughts happening in your mind. With this impact , obviously negativity will  over rule your mind and causes lack of interest, tiredness, nervousness.,lack of appetite and many more trouble to your body and mind. So it's better to address the root cause than just treating the symptoms. You may need a guidance of counseling support to figure out the reason for your anxiety and suitable solutions.