If you want to grow spiritually you need to engage in the following spiritual disciplines:

Read the Bible daily.
Attend church regularly.
Pray daily.

I listen to a half hour sermon 5 days a week. "Thru the Bible" is a great program. You can download it for free at ttb.org.

I also listen to Christian music. I listen to songs that touch me emotionally and feed me spiritually.

Most importantly, take obedience seriously. If you don't grow in obedience you're unlikely to grow spiritually.