This is the 10487th most frequent Polish word.
daję
"I give."
In this sentence, 'daję' means 'I am giving' or 'I give' and is used to describe the action of handing over objects (books) to someone (children).
Daję książki dzieciom.
I give books to the children.
Here, 'daję' is used to express the act of allotting or granting time or opportunity ('a moment to rest') to oneself.
Codziennie daję sobie chwilę na odpoczynek.
Every day I give myself a moment to rest.
In this context, 'daję' is metaphorical, meaning 'I provide' or 'I give' an intangible item (my opinion) to someone (friends).