Many people try to juggle a growing number of unfinished tasks by multi-tasking. When you leave a task unfinished, your brain might not let go so easily. Avoiding Attention ResidueLater research showed that a simple trick can help reduce attention residue: making a "ready-to-resume" plan. The ready-to-resume plan is based on implementation intentions, a self-help technique studied by psychologists Peter Gollwitzer and Anja Achtziger. Single-tasking with purpose means not just focusing on one task at a time, but switching between tasks mindfully.