nott: Poland is painfully struggling through the direct results of the past, so bear with us.
No so simple, as I see it. Germans, right, no problem, I can feel it from both official and personal experiences. As for the rest, this dream has already been tested by Pentagonale, a concept of creating a bloc of post-com countries with similar past and similar economies, and similar potential for development. Tried, failed, forgotten.
Why? Poland can not influence Lithuania, first thing, unless by force. Ukraine is less nationalistic, still more than half of it gravitates towards Russia. Slovakia is an open question to me, but be serious, what do they really matter. Hungary goes it's own way, why would it need Poland, or just any alliance with neighbours. They'd look at Austria, rather.
What you say reflects my sentiments from the early post-com times. It was tried, it didn't work, and it is not a sole Polish responsibility, as other countries have their say too. It's not Commonwealth any more.
There is absolutely no need to keep on crying about the past
You seem to contradict yourself a bit. Poles should know, and the West should know. Poland has raised from a limbo, and has a lot to present in order to become a fully recognised personality, not just a breeding ground of cleaners, builders, and strawberry-pickers.
If you ask me, the whole reason is that Poland seems unable to deal with her history in a rational, grown up way.
Ohh, right. Now do it. Create an unbiased history, in 20 years, while there are young and loud nationalisms around, and where there is a natural ignorance about the country kept in the closet for generations. And the problem is, that pointing fingers would be a significant part of this history, unfortunately. The West has to acknowledge this and that, before Poles stop 'whining'. Good thing is, I can see it happening, in the UK.
And the Jewish problem, sorry to stir muck...
Polish history is pretty tragic in some ways, but why are the successes never mentioned and celebrated?
They are, in Poland. Often ridiculed right here.