Such a big difference

Sometimes we keep everything just for us, we stay just looking at our own feet and we don't realize that surrounding us there are people that can get better with just few words. Every time I see someone like this man I think about saying something, people feel so lonely sometimes and we usually do nothing (me too). I have to take out that shyness and start being more human.
Any idea on how to change that? Do you want to try meeting new people and knowing new histories?