Thank you for asking. I can understand the distress you are through. Not able to fall asleep, overthinking, worrying, poor concentration, low mood, irritability, are important symptoms of Depression and Anxiety Disorders. Insecurities in relationship can be an important stressor. When the stress exceeds the individual's coping abilities, it can lead to a disorder. It can happen to anyone. Most importantly, it is completely curable. However, like any other medical problem, Psychological problems too require treatment. A detailed information regarding these issues is required for planing a specific management plan. It is important to get it treated in time, if not attended timely, it can progress in severity.
Next Steps
Kindly consult with a Psychiatrist.
Health Tips
Do not worry. There is a solution to it.