A short advice, you should really care about others. A good word does nothing, if you do not mean it. There is some practical things, that helps you to express yourself.
Be emotionally supportive and listen
It takes energy from you, but it worth it. When you listen someone always look into her or his eyes (and never touch your mobile phone)
Take him or her out from the everyday cycle
Going out for have some fun always make a lot of endorphin. It does not need to be a big event, just go out having some tee, in a place where nobody else is there.