First, care.

Speci?cally, if you discover, in frustration, that you’re pathologically incapable of doing one thing at a time, consider the possibility that you’ve been unknowingly trying to “focus” on two, twenty, or twenty thousand disparate things that you don’t really care that much about. Just consider it.

Because, in the absence of caring, nobody can focus on anything, apart from their abject lack of focus