Sad after watching relatable depressing film

I recently just watched a film that hit really close to home and made me evaluate my life and my mental health. The film was about a boy who was struggling from depression due to him believing that he was the cause for his mother's death. He constantly smiles even though he's hurting on the inside, he pretends that everything is okay and tells people that he is okay when he's not, he constantly relapses back into negative thoughts regardless of the support he receives from his friends. The way he constantly smiled even though he was hurting on the inside, the way he tried to pretend everything was okay in order to not upset those around him, the way no one took his sadness and struggles seriously enough. I realized that these were everything I've been doing my entire life. Bottled up feelings that I never knew I had, just started pouring out. I cried endlessly thinking about how my life was so similar to his. As I kept watching, I could see how he constantly relapsed, and relapsed into the negative abyss despite the support he was receiving. It made me think that about how relatable that was, because it seemed like negative thoughts always persisted. I thought, "its always going to be that way", and I burst out crying thinking that there wasn't going to be an end to it. It made me think that depression is very hard to cure.