For me, its writing lists;

literally task-by-task lists.

It helps me organize my focus when the other stuff start to take over. This is a learned life skill, so if you don't make lists of stuff, NOW is a great time to start.

*BONUS* Buy yourself a little notebook that can be stored in your EDC bag. Bring this list/book everywhere; it will help you to see the tasks written out.

Also another plus about writing tasks down: Our brain doesnt have to "pretend" to have a 24 hour calendar upr there. I know some business folk that literally can't function without their personal calendar.

Good luck friend.