For many people the excitement and potential of a new idea is quickly swamped by the mundane activity of implementation. When a new and exciting idea arises in the middle of this plateau, the first idea is abandoned, and never completed.
Give your ideas the realistic energy and space that they need. Multi-tasking is a great skill, but multi-procrastinating is a drain on anyone’s time.
Keep your “Future Ideas” file as a motivating reward to finish the existing project.
Build the discipline to stick with it, or run the risk of leaving a trail of half finished projects in your wake.