I know we have discussed that everything, and everyone, is energy, and that this has extended to our thoughts. Everything we put out there is a wave of energy that is compounded by the emotions behind it. This is where my personal belief separates a little from this Lesson.
The Lesson states that "thoughts are not big or little; powerful or weak. They are merely true or false." I believe that power can be applied to thoughts to bring about their creation. By feeling things, we create with more power. Think of love and that wonderful feeling and what peace it brings. Or the opposite extreme--hatred and the violence it creates. Thoughts that are backed by extreme emotions are powerful. Yet to get back to the Lesson--the goal of the first days of Lessons seems about separating ourselves from what we think is real, and understanding that everything is really an illusion created by us.
Taking that curve on the Lesson, there are no neutral thoughts. Everything has creative ability. The "true" thoughts create their own likeness; the "false" make theirs. Every thought we have extends either the truth or multiplies an illusion, brings peace or war. The secret is to be aware: "This thoughts about ______________ is not a neutral thought." As always, awareness is paramount.