I feel really bitter lately, just hating people who are socially successful, have friends, relationships, are sexually active, have jobs they like and so on. All of those things are unachievable to me and the bitterness and pessimism are making them even more unachievable. Its a vicious cycle. Feels hopeless.
I've rewritten this post 5 times now, trying to make it more concise and more helpful than my usual rambling.
I write a lot of posts that I end up deleting instead of posting. There are a lot of reasons for that. With my last few, sharing about being in a better place, I debated even more than usual whether or not to say anything. As the guy whose name is on the OP, I wanted to have some kind of hopeful message about getting better, but I honestly do worry about people resenting me for having things go well. I love my friends so much for the way we celebrate each others recovery. I love that sense that we are all in it together and what we want, more than anything, is to see each other healthy and happy. It sucks to think anyone would see me out having a nice dinner with my wife, smiling, and hate me for it. So much went into getting to where I am now, and so much goes into trying to just be okay, every second of every day.
You already mentioned how destructive bitterness and anger towards other peoples lives can be, Hermii. It drives people away and makes you avoid them in turn. It really is an awful cycle. When that bitterness starts to really set in, I think the need for professional help is especially pressing.
I don't think I ever got particularly bitter, despite always knowing people who had things I desperately wanted and either could not do/get or ended up losing because of depression. What helped me was that, in being open about my struggles, I found that people were often open with me in turn. I very quickly learned that everyone I knew was struggling with things I did not know about. Often, the things they struggled with were the last things I would ever guess. I'm sure there are people leading effortlessly cheerful, fulfilling lives, but I certainly don't know them.
There is this weird thing where my ideas of who I am are so deeply ingrained, I am completely shocked to find people see me completely the opposite way. I have terrible eyesight. Like, appallingly bad. But I've worn contacts since the end of high school, so almost no one I know knows this about me. I've become way more extroverted in the past 5 years or so, and I am still weirded out that my friends from this community do not believe me when I talk about how painfully shy I have always been.
The absolute weirdest thing happened in the last year or so. My coworkers all see me as this super upbeat, cheerful guy. People do not know that I lived with basically untreatable depression for over a decade, and it's basically only come under any kind of control very, very recently. If I tell people this, they don't really seem to believe me. I have learned to be more upbeat specifically as a defense against my depression. I can understand how you cannot see that unless you know me very well, and have for a long time.
So I guess I'd say that 1) people's situations are generally not quite what they seem (especially on a place like facebook where we are all more inclined to play up the best parts of our lives) and I really think most people are struggling with things you don't know about. 2) we all want to be cheered on in our victories over mental illness, large and small. The better I get at seeing the good in other people and celebrating their successes, the kinder I learn to be to myself. 3) I know how completely unrealistic something like having a job you like can be when you are very depressed. But things can turn around in really unexpected ways. I've worked so hard at my recovery, but the things that really helped me get in a position to be able to apply for this job, and then that helped me get it, were these smaller things that I did not think were very important at the time. All these tiny little things added up to something way bigger. 4) the absolute biggest thing for me was finding a mental health community that, much as we hated and/or hate ourselves, always wants each other to get better. I love the people in here who are really cheering people on, but it's something we could do better at. 5) for almost everybody, happiness means being around people. We need friends and partners and role models and on and on. We need people. When you find that the happiness of others really pisses you off, that is massively unhealthy and unsustainable. You've got to get out of that mindset - therapy, meds, talking to the people you actually can stand right now, reading - whatever it takes, you cannot get stuck in that mental place.