Hi einsamer schatten, I'm sorry things aren't going well for you but welcome to PC!!!
And, yes, you can talk to us, I see you've already got some great advise/support above

I know it must be really hard on you to try to talk to people and then find them to be unsupportive but you're right in saying that maybe some of them don't know what to say........in that case though could you give them a bit of an idea of what you want from them e.g. I just want you to listen, I just want you to
try and understand how I'm feeling........???
And for the people you don't want to "put your problems on" well maybe some of them would actually appreciate the opportunity to be there for you???
But
everyone is going to need help/support at some time or other so please don't feel guilty for asking for that.
And
kudos to you for having taken the steps you have, in trying to turn things around for yourself. It might not feel like they count right now, but they are
real achievements/they
are really important. It's just that you need a little more in helping you appreciate them maybe??? e.g. a little more self esteem......a little more help with your problems........a little more help with the way you're feeling????
And maybe some places you could start with would be in talking to your doctor or a T if you have one??? But if you want to talk more here too that would be good........it sounds like you have a lot going on for you..........and you
don't have to do it alone 
Alison