With young people, it's best to empathize with them when giving advice. It's difficult sometimes as the dilemma that they are going through may not be as big as they think it is, but it's important to them at that moment in time, so I'd say try to belittle them when offering them advice. As for old people, the advice needs to be very clear, almost broken down into understandable chunks so that they can follow it and see how it will help them. Try to avoid being condescending if you can.
对于年轻人,在给出建议时最好能与他们产生共鸣。有时这很难,因为他们正在经历的困境可能并没有他们想象的那么大,但在那一刻,这对他们来说很重要,所以我会说,在给他们提供建议时,尽量不要贬低他们。至于老人,建议要非常清晰,几乎要分成可以理解的几块,这样他们才能理解并明白建议对他们有什么帮助。如果可以,尽量避免居高临下。