I'm going to give you a piece of advice.

Sound advice is sometimes worth its weight in gold. But this can violate personal boundaries and even take the form of psychological violence. So even if you really want to give advice, refrain. Give advice only when you are asked for it. And try not to be arrogant or opinionated in order not to oppress her/him. If you still can't help giving you advice, say something like: "I had a similar experience recently and I'd be happy to share my experience if you don't mind." Let your opponent choose to listen to you or not.