Decide What is Deep Work for You: Which task you want to in 'Deep work' mode.
Schedule Distractions: In your calendar set the times when you will check your phone or other distractions.
Deep Work Ritual: Make deep work your daily habit. Keep a fixed time when you will do deep work.
Evening Shut Down: In the evening plan your next day and write everything down that needs to do next (from your mind) and say "Shut Down Complete". Then detach from your work and enjoy the time with your loved one and have a good night's sleep.