Among the advice that I don't seek out, one stands out as most popular: don't be so pessimistic.
I try to reassure the advice-giver that I am not a pessimist at all. In fact, I think I am usually a naive optimist trying for realism. For example, I know that Christ and His faithful triumph in the end. I pray for the virtue of Hope. But I still think that civilization as we know it is headed down the toilet. Am I a pessimist?
Anyway, via The Tenth Crusade, this sermon by Fr. George Rutler hit home for me. Enjoy: