This is the 4944th most frequent Polish word.
początkiem
"At the beginning" or "the beginning."
Here, 'początkiem' means 'at the beginning of', indicating a specific time period.
Początkiem lipca wyjechałem na wakacje.
At the beginning of July, I went on vacation.
In this sentence, 'początkiem' refers to the initial point or foundation of an abstract concept like success.
Początkiem sukcesu jest dobry plan.
The beginning of success is a good plan.
This usage of 'początkiem' conveys the start of a concrete or symbolic period, such as spring.