Saudade is a Portuguese and Galician word for a feeling of longing for something that can be time, place, person(s), a feeling, a moment, objects, a situation, an idea, a state of mind or a relationship phase etc. . Doesn’t translate well in English, despite being a sentiment well known to all of us.
Saudade is also related to happiness, when memories and nostalgic moments are brought into the present. Or in imagining things that might happen in the future if the present were changed. Longing is something we carry with us. We don’t want to miss it because it’s related to memory. Therefore, it becomes part of our identity.