I am actually in a similar situation, I see people in so much hadrship n keeps effecting me. I think the fact that it effects you shows that you have a good heart. However, don't join them. You can try to be a means of mercy to them, listen to them & remind them that there is ease after hardship.
Tell them that others have it worse. Like, give them examples of those suffering. Remind them that some people are blind, and they still manage to keep going. What about the widowed childless mother in Iraq? Wat about the innocent child who lost his entire family within the blink of an eye in Afghanistan? Looking for food from the streets? Wat did he do? Is their hardship as bad as his?
You should be happy, don't feel guilty cause u are happy. Wen u are happy thats mercy from Allah, you should say Alhamdulilah.
up Volume 9, Book 93, Number 596
Narrator: Abu Huraira
Allah's Apostle said, "Allah said,
'I am to my slave as he thinks of Me, (i.e. I am able to do for him what he thinks I can do for him). (See Hadith No. 502)
Ask Allah Anything n believe that he can do it..