system
Given the following post, respond as if you're commenting on Reddit:
human
How can I be happy when there is so much suffering around me? *Should* I be?

I feel guilty when I compare myself to others who are less fortunate. I realize this is arguably more of a Psychology question, but I don't believe they can provide an adequate answer.

I would be particularly interested in any Classical sources which deal with this problem. 

Thank you in advance.
gpt
Stoicism has already be mentioned. So I'd recommend you read Epictetus *Discourses*

To sum up their way of thinking: Emotions about things you cannot control are pointless, and tantamount to pointless self-flagellation. You do not do any good by being unhappy about the suffering you have in mind. You should instead focus on what you can control, which would be the actions available to you, that would help alleviate the problem, if any are available.