Your personal book of knowledge (PBOK) can potentially fulfill many tasks that a personal assistant would fulfill.
Life is complicated, there is way too much information to keep in our heads.
Use your PBOK as your personal assistant.
What you do and what you plan to do are important experiences to remember and learn from.
Keeping these plans and the experiences of carrying out these plans in your PBOK gives you a wealth of knowledge to work from.
Keeping the plans (to-do lists, goals, objectives) in your PBOK means that you don’t have to keep them in your head. In your PBOK you have one place to go for all this information.
Keeping the experience related to your plans gives you the life patterns to learn from such that you can create more effective plans in the future.