The more we give a human, the less happy they seem to be. This is, of course, a vast general statement that I have no way of proving, but I think most of us understand the type.
I believe that the misery that comes with abundance is because as we acquire more material stuff, our desire for more grows in proportion to our acquisitions.
However, the cruel trick of the geocentric world is that as we get more stuff, the pleasure we derive from that stuff diminishes.
Part of deep happiness comes from the ability to enjoy less and thrive where there is a lack. That contentment steadies an uneasy ship and quells the boisterous waves of misery. Be content, my friends.