when i looked at the stats, they have the highest unemployment rate in the EU, a GDP of 16000, and in the bottom 3 countries in the EU next to ROMANIA AND BULGARIA!!
Let's see:
1. Between 1939 and 1945 Poland lost over 65% of economic and intellectual infrastructure, destroyed methodically by the Germans. Building, roads, factories, bridges, universities, schools were destroyed. In the aftermath of WW2 many industrial installations in usable condition were dismantled by the Soviets and transported to the USSR.
2. Soviets made sure that Poland (Unlike Germany) was not allowed to benefit from Marshal plan.
3. Between 1939 and 1946 Poland lost many of the best of Poland's assets - professors, scientists, teachers, doctors, dentists, officers, journalists, and others were either murdered in mass executions or sent to prisons, gulags and concentration camps. That's tens of thousands of the nation's intellectual asset.
4. In the years after WW2 Poland lost lost many of the best of Poland's human assets to emigration, prison, murder and persecution due to Soviet repression.
5. In the years after WW2 Poland was systematically plundered by the Soviet occupant through the so called EEC (RWG in Polish).
6. In the years after WW2, because of its continued resistance to the communist ideology and the Soviet occupation, Poland's technological and industrial development was deliberatelly kept at bay and slowed down. EEC (actually, its Soviet bosses) decided Poland would be an agricultural country, with only absolutely bare and essential focus on high-tech, industry, services and science.
(I won't even go into over 100 years of Poland's partitions and the losses suffered during that period)
Considering the above, I think Poland is doing just fine. Certainly better than countries such as you mentioned, even though those countries did not suffer even half of what Poland did during WW2.
You can feel all the shame you want, but I can't help but assume that it is because you are likely a young fella, with a strong need of instant gratification. That kind of gratification is not easilly attainable by any nation that barely started to breathe freely only less than 20 years ago. If you expect miracles then some form of religion may possibly help with your anxieties.