Rapunzel said:
It's a fine line.
Sometimes it's hard not to want to jump in and fix things, especially when the solution seems so obvious.
But most people don't want someone to fix it or to tell them they need to change. They have a hard enough time accepting stuff like that from a therapist.
Another thing that isn't always supportive is telling too much of our own story in response to someone asking for help or to be heard.