I don't know you, or your situation in the slightest, so this comment isn't directed at you personally. I see my younger self in your comment so I'm going to write what I think needed to hear.

If you keep this attitude you are fucked. I know it's not as simple as just deciding to change, you maybe have even tried before , but you ought to take responsibility for yourself, your feelings, and the way you react to things, otherwise there will be no progress. Sometimes you might think life is unfair, and maybe it is, but let me tell you, sulking is not productive, and will do you more harm. It will imobilise you in a negative feedback loop. That's not to say to squash emotions, if you feel bad, then no shame in feeling bad. Just try to understand why, then try your best to keep on moving. It ain't easy, but nothing is. For most people life isn't a fairy tale.