it is a matter of (doing something)

What is important is (doing something). It's a matter of sticking with the program in order to succeed.

Name	Pronounced	Usage
DeasÚN	-	Irish
Nona (2)	-	English, Ancient Roman (Rare)
Gaye (2)	-	Turkish
Mitchell	MICH-əl	English
TahİR	-	Turkish
Lali	-	Georgian