T2U - It can be really hard when you take on others issues. The trick is, to help them on the site, and as you shut the computer down, let it go. It is worring when someone is in crisis, and they take a few days to get back and post. If you are worried and waiting for a reply, that can become unhealthy for you.
I always 'detacth', when I shut the computer down, this I have adopted in life, at work, with friends that need support from me. I deal with it at the time, then sort of let it go.
I have to do it this way, as life is hard enough as it is without carrying all the hurts of the world around with me too.
I work in social work, (10yrs), and before that, dementia and terminal care, (10yrs). I say goodbye to each kid, and each patient, and if I didn't seperate myself, I would be a mess, and not be able to carry on with my job.
Hope that makes sense, and answers what you are asking.