One of the hardest things for me with depression is the incredible guilt I have. What right do I have to be depressed when my life is objectively fine? Why should I get therapy when that might mean one less space for someone who is dealing with trauma or poverty or something else that gives them a "right" to be depressed? This causes a feedback loop of guilt leading to more depression and vice-versa.

Like I tell my kids, it's normal to sometimes feel depressed or hopeless. If you're dealing with a difficult circumstance then it's reasonable to have those feelings, and the only way to address those feelings is to deal with the circumstance. What's not normal is feeling depressed and hopeless for no logical reason at all.

Depression isn’t like an infection or cancer—it’s a diagnosis based on established criteria, as are most mental disorders. Experts may disagree on diagnosis or treatment, but that doesn’t make it useless.

By that logic, you might as well say autism is caused by avoiding eye contact—since there’s no blood test for it either.

I hope you can take your personal anecdotes and add them to a larger body of research and other people's experience to refine your understanding. If you're right that everyone who has Depression is actually just lazy, you'll see lots of support for that. If, instead, you find a lot of different experiences you might conclude that Depression is a pretty nuanced and complicated topic, which might both expand your understanding and help you bring more empathy to the suffering people around you.

And then you feel worthless for not being able to do those things, reinforcing the depression.