Everybody has his unique problems, which begin from attitudes. Traditionally, religion books, as a wisdom books, have summarized those most negative attitudes within the seven sins (pride, greed, lust, envy, gluttony, wrath and sloth).
It depends on the situation you live: rich people need more time, poor people need more money, sick people need health, young people need more experience, and everyone needs wisdom to have a nine day.
I think it is a lack of historical perspective. People seem to lack the understanding of how far we have actually come in terms of progress, from technological growth and the expansion of rights. In a non-historical the problems of today look horrible but compared to what has been faced in the passed we are doing pretty well.
Bare in mind I am no expert on this subject. This is just a opinion based on personal observations.