I wonder too. This is why I love it when someone comes back after some time to update us (or just me, whichever) on how things turned out or to say if they improved and what happened. Going by that, it seems I've helped at least a small handful of people before, which makes me feel pretty fantastic. Do I help more? I have no idea... I certainly hope so.
I don't give great advice. It's one of my weak points, so I don't expect anybody to actually get anything useful out of my opinions. However, I actually really do read everybody's comments on my question and take them to heart. People on this site have helped me a lot especially the guys for helping me understand my crush's behavior