Give Your To-Do's Context
In your todo app of choice (I'm personally a longtime Omnifocus user), here is a tip:
When capture to-do's, be sure to include context - you future self will thank you.
For example:
Call dentist's office
Might seem perfectly clear to you at the moment you capture it. Buuuut in three days it might not be so clear. How about:
Call Dr. Smith's office to make an appointment about your crown
Is much more clear, and will be a lot less work to decipher later.
The extra 10 seconds you spend now might save you minutes of headscratching later.