Self-Criticism

Does there become a point when self-criticism causes more harm than good? Is there a tendency to reflect more on the bad than the good?

Strange questions to ponder while watching Take Me Out to the Ball Game.

This movie is so unabashedly pro-American that I doubt anything similar could be made today. I cannot picture any of today's stars singing these lyrics from Strictly USA:

Go to a picnic, go to clambake,
Go to a bar tent, or county fair,
You'll be the happy resident,
Maybe get to be the future president,
Take a man like Abraham Lincoln,
Take a state like I-O-Way
Take a sugar-cured ham, a candied yam,
Or take your favorite Uncle Sam,
And shout a big hooray, it's strictly USA.
You never can know a country
Till you know the folks, see them
In their own native locales.
If you wanna see young acorns
Growing into oaks, you gotta
See the fellas and gals.
And inspecting extra special,
A bunch of merchandise,
The all-American Cow wins the prize.
Your All-American man is nice young man,
He is a handy man in a pinch,

Self-criticism is supposed to rectify short-comings but if criticism is not tempered with self-pride, it can become self-destructive. Can anyone picture the Dixie Chicks singing the above song?