I've struggled with Depression and Anxiety since I was a toddler, so I'm not just telling you this to make you feel better; depressions, anxieties and other mental problems are not something that need to be qualified nor quantified. Something in your mind is unhealthy and that is a very large obstacle for you, it doesn't matter if other's have a mountain, jumping your wall can still feel just as insurmountable.
Think of it this way, if you hadn't eaten in a week and then found out someone in China hasn't eaten in a month, does that suddenly fill your belly? No. The type of people on those forums are people like you, and like me, and they generally are going to be understanding of that fact. Let that community help you through your issues and when you get better you can pay it back in kind.