(Links to more resources)
"Dysphoria" is a general word that's broader than how the trans community typically uses it. It describes a dim, deeply felt sense that something is wrong, even if you don't necessarily understand why. Some people experience gender dysphoria, which generally includes discomfort about how other people see them in gendered ways or having to relate to people in a way that doesn't feel right because of their gender. One of the many reasons why we stress that you don't need to be dysphoric to still want to live as another gender is because gender dysphoria is much more common than you might think.
Gender dysphoria often imitates a more general dysphoria about how you relate to people socially. If you want to understand the true nature of your dysphoria, it's important to look deeply at your own fearsome heart and take an honest look at what you need to thrive. Will living as a different gender help you find surer footing in life? Will it at least give you some space to explore and experiment?
☝ Living as a different gender will not necessarily fix all of your dysphoria or your ordinary depression. It isn't a silver bullet (see one example). However, we find engaging with dysphoria rather than turning away often gives people more breathing room, so they can take further steps more confidently.
This feeling shows up in many ways, so we strongly encourage you to talk with other folks who've been through gender dysphoria and read through their experiences.