When you're interested in doing something, you only do it when it's convenient. When you're committed, you accept no excuses, only results.
Begin today accepting nothing but a full commitment to your faith. Quit making excuses, Jesus says there is no such thing as a lukewarm believer (meaning just an "interested Christian"). We need to give our all to God and our Christian faith – lukewarm just doesn't cut it.
I know your works: you are neither cold nor hot. Would that you were either cold or hot! So, because you are lukewarm, and neither hot nor cold, I will spit you out of my mouth.