. . . the real attack comes when things get slow and monotonous, when training and dedication seem like they haven't yet or are not quite paying off. that is the time that intensity is needed.
I've been running pretty intensely (in the physical) for this fitness assessment I have coming up and i can tell you that during a 5k there is a specific point where you look at your feet and wonder "Why am I doing this, is this really going to help, i could just lighten up and i'll get to the same place, right?" that is the precise moment that gutting up and pushing harder becomes the key to success.
in the same way all of my friends who have "fallen" or experienced devastating defeat in their lives are self-admittedly the ones who gave up for just a little bit. their intentions were usually noble, "everyone needs rest", "it's just not fun anymore", "I'm tired of not getting anywhere" "man, this chick is worth it". But the Christian Walk is a daily fight, if this reality isn't accessed and lived in early on, you will never be prepared for this journey. spirituality isn't something that "comes naturally" (that's why it's called "Supernatural") ask a monk how long enlightenment takes, find a shaman who isn't ready to sacrifice.
Christians are easily overly concerned with other's salvation and less focused with our own, but the opposite is necessary to effectively be "in Christ". Phil. 2:12, Matt. 24:13