What is the ruling on masturbation and how can one stop it? Is being away from family a justification for feeling distressed and regretful?

We ask Allah the Almighty to accept your repentance and rid you of this bad habit, for you have no excuse in practicing it while you are married. Turn to Allah with supplication to abandon it. Talk to your husband about not reaching satisfaction and climax with him to find a solution. Abandoning this habit helps achieve sexual fulfillment with the husband. As for the second problem, it is natural and will disappear with time, harmony with your husband, and your being blessed with children.