Books about depression/sadness

Colorful illustration of a girl with brown hair looking up at a bright, cheerful sky. The sky has a smiling sun, rainbow, clouds, birds, butterflies, and playful elements. Text reads, "I'M HAPPY-SAD TODAY."
Illustration of two giraffes, a taller adult and a smaller baby, with a sunset background and the text 'Somewhere, Right Now.'
Cover of a book titled 'A Voice in the Storm' by Karl James Mountford, featuring a bear in a natural setting with stormy clouds and trees.
Cover of a children's book titled "The Big Squeeze" featuring an animated sponge character with big eyes, a small smile, and pink shoes, sitting in a pink bathtub surrounded by soap bubbles in a bathroom setting.
A children's book titled 'Taco Falls Apart' with an animated taco character on a plate surrounded by food items, with a fork nearby.
Book cover titled 'Positivity is my Superpower' by Alicia Ortego, featuring a child jumping with arms raised, holding a trophy, against a light sky background.
Cute illustration of a girl in a pink coat looking at a ghostly figure with a sad expression. Text reads 'When Sadness is at Your Door.'
Book cover titled 'Eight Stories Up: An Adolescents Chooses Hope Over Suicide', showing a person sitting on the floor with their head down, surrounded by books.
Book cover with the title 'When Sadness Is At Your Door' by Eva Eland, showing a small girl in a pink coat pointing at a large, light blue, sad ghostly face.
A colorful illustrated book cover titled 'In the Blue' by Erin Hourigan. It features a woman holding a child, both with curly hair, standing at the ocean's edge with waves crashing behind them. The woman looks pensively into the distance, while the child looks up at her.
Book cover titled 'Little Grump Truck' with a purple cartoon truck character beneath a sign reading 'LITTLE' and 'TRUCK' in colorful text.
Cover of 'When the Fog Rolls In' by Pam Fong, featuring a cartoon puffin bird on rocks in a foggy coastal scene.
Cover of a children's book titled 'The Princess and the Fog' by Anthony Lloyd Jones, showing a princess sitting on a throne with a large purple throne, a crown, and a foggy background.
A cartoon illustration featuring a person with a yellow round head and purple hair, carrying a yellow suitcase and a green bag, looking at a large yellow sign with black text that reads "When things aren't going right, go left." A small black and white bird is flying nearby, and the background shows a starry night sky and green grass.
Book cover titled 'A Kids Book About Shame' by Jannie Letourneau, featuring a silhouette of a child's face with a textured background.
Illustration of two boys embracing, with a harbor scene in the background and the title 'Big Boys Cry' by Jonty Howley
Book cover titled 'Blue Moon' featuring a gray moon with a face, surrounded by colorful smiling balloons.
Cartoon illustration of a group of superheros standing in the rain, with the title 'Even Superheroes Have Bad Days' at the top. The superheros display various emotions and wear colorful costumes.