Firstly don't overthink it's does not end great. It's okay to miss friends but everybody is busy in their own life and we cannot expect everyone to give time to us. I know everyone says not to overthink or be calm but I know how a person feels and cannot overcome the situation, but think in terms of your health, there's a saying Health is Wealth, which is actually true. Worrying about family is good thing which shows you are a responsible person knows what to do and how to overcome anything. Try to engage in physical activity which will eventually make your body exhausted and feel sleepy.