If you define the right mindset as the one that makes your dreams come true, than logically the right mindset makes your dreams come true.
But one shouldn't think that it is somehow easy to get a right mindset.
In addition dreams are a part of the mindset, so they change as your mindset changes.
I do not think that it is a coincidence that old Buddhist monks weren't allowed to own anything. They tried to drop their execptions, their dreams to get a better mindset.
And it also locially that they were rather able to fulfill their remaining dreams after dropping most of them.
And they were happy with that fact.
