My routine;
- Put on a noise cancelation headset and play a lo-fi playlist
- Start with a todo list
- Start time tracker ( in my case a Pomodre app )
- Integrate your tracker with Apple DND so you won't get distracted
- Last but not least. Leave your phone behind
Bonus:
If these don't work. Take 7-8 deep breaths or do a Guided Wim Hof Method Breathing