Greece would be fortunate to have Mississippi's economy about right now, they have a 26% unemployment rate; Mississippi is 7.x%.
Greece has 100 times as much government debt as Mississippi.
Greece has a ~$200b economy, $20k per capita GDP, and 11 million people. Mississippi has a $110b economy, with just 3 million people, and a per capita GDP of about $37k or soon to be twice that of Greece.
If Greece does everything right for 30 years, they might catch back up to Mississippi.
Their actions so far are rapidly leading them toward being a second tier European economy, in the category with Slovakia, Czech, Slovenia, Russia, Poland etc. instead of being with eg France, Italy and Germany. In fact they're already there, the question now is how much further are they going to fall - the likely answer is they'll lose at least another 1/3 of their real economy.
Greece has an amazing history. That history won't feed or employ people, or keep Greece economically competitive such that their children have a good future.
When you talk to people from Bulgaria, Ukraine, Moldova, Macedonia, etc. they tend to be very focused on economy and money, and there's a good reason for that - they're trying to survive.