Focus on the internal economy... put out of work people in jobs producing food, clothing and shelter for the internal market... If banks fall, let them fall.

Correct. There's a lot of worthy stuff at http://en.wikipedia.org/wiki/Economy_of_Greece but tourism is a road they shouldn't have gone down. The problem with tourism (and other export-focused economies) is that your people become focused on serving those outside your country. If other countries ever stop buying your stuff (for example, global economic meltdown resulting in a plunge of tourists), then your economy goes down the tubes.

If they had instead focused on satisfying domestic consumption, then it doesn't really matter if other countries stop buying, they are still able to sustain themselves.

This isn't to say they should start ignoring the outside world (a la North Korea). The point is that real wealth is the ability to produce what you want to consume. Relying on gathering foreign reserves and then buying what others produce is much less secure, since you have much less control over what happens in other countries. Once you do have some measure of domestic security, you are then able to shift away from foreign competition into foreign cooperation.

That is, instead of being afraid when other nations can outproduce you, you don't care, since you can already produce for yourself. You then are actually free to improve production in other nations, to actually improve their ability to help you. Thus cooperation.