Hello Friend, Good that you are seeking a help. You are right. Anxiety and sleep are interconnected. You may be thinking too much  about something in future like career, exams, relationships, financial etc. This would cause some kind of fear and anxiety. In directly this emotional disturbance can affect your body by sleeplessness, nervousness, poor appetite, constipation etc. Surely, it's a curable problem and you may need some assistance and counseling support to figure out the reason for your anxiety. Reach out to me online or consult any psychology counselor nearby.