I really don't know what to do with myself. Sad is not enough to describe how I feel, because it is such a rollercoaster of negative emotions. Lately my life feels like a big failure. No matter what I do everything ends bad, and now I feel like a shadow of a human. There is no happiness in me. Worst part is that I can't stop overthinking, and instead of pushing those thoughts I am letting them take control over me, and I write to my friends such a nonsense stuff that they are starting to get angry at me. I have no idea how to glue myself back