This is the 4643rd most frequent Dutch word.
dít
"This" (emphatic form).
Here, 'dít' is emphasized through the acute accent, which makes it a stressed form of 'dit', highlighting the specific book being referred to.
Dít boek is mijn favoriet.
This book is my favorite.
'Dít' in this context distinguishes the specific problem at hand that requires attention, as opposed to other potential problems.
Kun je dít probleem voor mij oplossen?
Can you solve this problem for me?
In this sentence, 'dít' serves to exclusively point out the particular plan being discussed or addressed.