The concept of the world being an Ithia actually leads to a circuit. The contact with the world is like a spider's web touching your eyeball. If you are sensitive, for the thinker, everything is suffering. It does not literally mean that you are always glum and gloomy and suffering. Even if you're happy.
Swami Sarvapriyananda teaches Chapter 10 (Verses 1 - 3) of the Bhagavad Gita. In this series of talks, Swami Sarvapriyananda unfolds the highest truths of Vedanta through the study of the Bhagavad Gita (The Song of God).