Hi Dawn, I'm new here, so go easy on me!
Your post compelled me to answer. You sound like a kind, caring person. That is a good thing, we could do with all the good guys we can lay our hands on.
There is no simple solution to the world's problems. We know that money alone will not help the plight of the millions who starve every day. I personally know that you can support someone to the point of being at their beck and call; and still they can't cope. For any problem you can think of there is more than one answer.
In the face of this it could all seem impossible and pointless. If it weren't for the fact that we do has a resonance beyond our comprehension. At first, it may seem as if nothing is happening, then,maybe years down the line a small shift occurs. Light at the end of the tunnel. On a personal level, I have received charity, help and counsel which at the time would only have seemed to solve the problem on the surface. The effect on me though, was profound. It shaped me into the person I am now (which may or may not be a good thing!)
Try not to be overwhelmed, but do keep trying. As an ex-JW, ex-Catholic I can see what you are saying about a sense of guilt, which is not always a bad thing, but it serves you poorly if it kills your motivation or creates imbalance in your own life.
As an ex-JW it can be difficult to make sense of the world. At one time, we had all the answers, life was simple. We may even have brought some good into people's lives. Now we have to figure it out on our own, which I believe is the purpose of every individual on Earth.
Better stop now, or I'll be here all day. Take care, don't overdo the worrying thing!