The pursuit of perfection is frustrating and a waste of time, because nothing is ever perfect.
The pursuit of excellence is commendable and worthwhile. Therefore strive for excellence not perfection.
There is no failure in life. It all depends how you take things. If you are desiring too much - you want to reach too high, and you cannot - then there is frustration and failure. But if you are not desiring anything and you are perfectly happy wherever you are, life is moment-to-moment victory.
Buddha's doctrine: Man suffers because of his craving to possess and keep forever things which are essentially impermanent...this frustration of the desire to possess is the immediate cause of suffering.
I think sometimes Europe may take for granted the extraordinary progress that's been made over the last 40, 50 years. I recognize that sometimes there is great frustration that arises out of the euro zone or out of the EU.
Depression seems to be related to fear, anger and frustration. When you're in a bad mood, even if you meet with your friends, you don't take pleasure in their company. But when you're in a good mood, even if things go wrong, you can cope with them without difficulty. This is why putting yourself in a good mood, making a point of developing a sense of loving kindness gives you greater inner strength.