Learning new words is like adding colors to your paint set. Suddenly you can describe what you actually feel.

Without the word for a feeling, you are stuck rounding it off to sad or fine. More words means more resolution, so you can tell restless from bored, or hurt from embarrassed. Naming something accurately also makes it smaller and easier to say to someone. Your inner life gets clearer as the vocabulary does.

Pick up one word a week from whatever you are reading or watching. Use it the same day on something real, because a word only sticks once you have spent it.