If indeed the qualities such as love, patience, tolerance, and forgiveness are what happiness consists in, and if it is also true that compassion, defined as concern for others, is both the source and the fruit of these qualities, then the more we are compassionate, the more we provide for our own happiness.
The compassion we feel normally is biased and mixed with attachment. Genuine compassion flows towards all living beings, particularly your enemies. If I try to develop compassion towards my enemy, it may not benefit him directly, he may not even be aware of it. But it will immediately benefit me by calming my mind. On the other hand, if I dwell on how awful everything is, I immediately lose my peace of mind.
For a practitioner of love and compassion, an enemy is one of the most important teachers. Without an enemy you cannot practice tolerance, and without tolerance you cannot build a sound basis of compassion.
The Greek people have gone through some very difficult times and there's still a hard road ahead, but despite those hardships, Greece has continued to be a reliable ally, has shown true compassion to fellow human beings in need. It's an example of the Greek character.
True happiness comes from having a sense of inner peace and contentment, which in turn must be achieved by cultivating altruism, love and compassion, and by eliminating anger, selfishness and greed.
There are no limits to God's compassion with Paradises over their one universally felt want: he immediately created other animals besides. God's first blunder: Man didn't find the animals amusing, - he dominated them and didn't even want to be an 'animal.'