When I'm going on long distance hikes, there are times I'm in incredible pain and just flat-out exhausted. If I didn't have a partner along with me, I'd just sit down, or I'd flat-out turn back. Having a partner in tough times keeps us going.
Spiritually it's the same. Who we surround ourselves with really matters. God says that, "Therefore encourage one another and build one another up," (1 Thess 5:11), and that's exactly what we need. Are your closest companions going to push you to excel spiritually, to remain faithful to a spiritual workout regimen? Will you do it for your friends?
"For the entire Law is fulfilled in in this one word: "You shall love your neighbor as yourself."—Gal 5:14