I just pop in experiences of my own when relevant to whatever they are talking about or problem they have. They can take it on board and apply it to their own situation if it seems to be a help/solution...or ignore it, and that's fine. I feel I've done my bit.
[I also feel it helps them get to know me, what's made me who I am, why I took the decisions I did in various situations [and my mistakes/struggles] a bit better].
It means I can relate, that I'm here to listen and support if needed. Everyone is so different, with unique backgrounds, needs and dreams, experience and logic so we have to let them find their own ways. But let them feel we are approachable and may have some wisdom after all!