If it feels right, slow down sometimes, particularly if you’re a fast typist; it gives your venter time to think. You can always use encouraging phrases like “go on…” or “tell me more…” just to facilitate more reflectiveness and openness. In a written context, “OK…” can be difficult sometimes, however, as it can be harder for the venter to read the inflection of the listener, particularly if they’re distressed.
I can see where you’re coming from Arasevera; sometimes showing a venter that you’ve been there can help. But there’s also a danger sometimes that it can be unhelpful, because the conversation then can be about you, rather than them. Also, just because the same thing has happened to you doesn’t mean that you’ll necessarily understand how the venter feels about these problems. Your own feelings about what happened to you can get in the way, and they can destabilise you as listener.