Discard the unnecessary. It isn't always easy to tell but there are often subtle signs around what is and isn't necessary. Unnecessary things usually feel sort of shadowy in your mind or require an additional effort that doesn't fit square into what you are doing. Think about what it's like to carry too many groceries into the house at once. Necessary things are solid and leap forward into your mind with evident emphasize. Be ruthless with your pruning of those unnecessary branches and your trip down the rabbit hole will be both smoother and more thrilling.