That was an incredibly poignant and well-written post Img, thank you.
Ouch, that's rough. It sounds to me like you're probably beating yourself up a bit, I doubt you're bad at what you do. But I guess science, in terms of recognition/career, probably rewards the most when people have an idea and then their experiments do pan out and support the theory. But, it doesn't mean you've done bad science if it doesn't. In fact then you've done good science, you've determined that what you thought is not supported by experiments, that it's not true. That's something. Doing bad science would involve trying to make it seem like your theory is supported by your experiments when you know it's not.
In any case, I don't actually know your specific situation at all obviously, just the thoughts I had on that in general. If it does turn out you don't continue down the path you're on, what things are there that you love doing that you could try to make your life's work instead? You're young yet, you can still do anything. Doing something you love makes such a huge difference in your quality of life.
Yeah, when I was feeling depressed, I found that I was looking at the world in a profoundly negative way, or maybe what I was seeing, or choosing (subconsciously anyway) to see was the negatives. Perhaps it's a way for us to put some of our frustration on something else, I don't know. I definitely remember being frightened, disgusted and bitter with the world, and these feelings dragged me down and made me a less happy and positive person for a while. Part of my process of getting better was consciously choosing to let thoughts that bring pain with no purpose (ie, nothing actually changes by dwelling on it) dissipate when I noticed them, and to make an effort to notice, acknowledge, and think about the positive things I see around me instead of the negatives. It's easier and more natural when you stop focusing on the news and media outlets (not only because they tend to just report the bad stuff, but also because at this time there is a lot of hate and negativity being expressed in our culture and people are getting really inundated by it) and whatnot and start focusing on your local area, your town, your neighborhood, your community. There are lots of good people everywhere. There are definitely some bad people too but most people are good. Some people are all twisted up and spout hate, but they, too, are actually good people, they're doing what they think is right because they were indoctrinated into a particular culture.
Focusing on things that bring you anger/pain/fear/etc that you can't change is a trap, it does no good at all. But you CAN change yourself if you work at it, and you can have a positive impact on your local community and all the people you touch in your daily interactions and your relationships. The first step for me, before all other steps, was to consciously decide to stop focusing on the negative. Then it allowed room for me to be open to the awareness of the positive.
Beautiful writing.
You're great man, don't let life's stumbles drag you down, just gotta get up and keep going. But truly, it is possible to change the way you think, it just takes doing and dedication.