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
&Aelig;Thelstan	-	Anglo-Saxon
SunČIca	soon-CHEET-sah	Croatian
VÍTor	VEE-toor (Portuguese), BEE-tawr (Galician)	Portuguese, Galician
Theofania	-	Greek
Gandalf	GAN-dahlf (English)	Norse Mythology, Literature
Deodato	-	Portuguese