We can all feel a bit invisible sometimes. As humans, some of our core desires are to feel seen and heard. With all I do, it may be hard to believe that sometimes I feel invisible. But I do now and then. Sometimes we just don’t feel seen or like we’re making a difference (no matter how untrue that may be), and that can be disheartening. Funny, though, how we receive little reminders from the Universe that everything is okay. That we do matter. Yesterday, that came in the form of a letter from a reader of my book Operation Happiness telling me that listening to the audio version has…