Looks like the clouds are heavy above you , don’t worry they will pass . Sometimes the sacrifice we make now will put us in a better future. If you can write to your gf, if you love her then talk to her, email her , never know what you two will become in the future. Tend to the family business, if you got employees they are dependent on you , so ask there input too if you got questions or not sure
Be a team not an individual. Ask your dad if you got questions too keep his mind occupied. And feel free to write here again if you got questions