Welcome everyone. Thanks for your replies.

@Skeezyks I'm going to browse the articles (though I have already read much about depression over the past years) and have a look around the subforum you pointed me at. But to be honest, I'm not quite ready to consider my problems to be an aging issue (I'm still only 30 years old), nor do I want to come to acceptance of my limitations when these issues simply weren't there just some years ago. My aim is to overcome and reverse this somehow, as long as I have hope.