This is the 17682nd most frequent Polish word.
zmienienia
"Zmienienia" means "of changing" or "of alteration" (genitive singular form of "zmienienie").
The word 'zmienienia' here refers to the act of changing or alteration of mindset, demonstrating a noun usage derived from the verb 'zmienić'.
Potrzebuję zmienienia sposobu myślenia.
I need a change in my way of thinking.
In this sentence, 'zmienienia' signifies the process or act of changing, a nominalization of the verb 'zmienić'.
Proces zmienienia trudnych decyzji wymaga czasu.
The process of changing difficult decisions takes time.
Here, 'zmienienia' is used to describe the act of modification regarding habits, again representing a noun formed from the verb 'zmienić'.