I Love God!!! I say this first, because He is the very best advise I have! I've gone through a lot of rediculas crap in my life, infact spent time in jail, I have had 4 DUI's, a failed Marriage behind me, and the list goes on!! I was caught up in such a horrible cycle of self-destruction I'm often surprised I'm still Alive!
I just answered someone elses question who was having trouble with a friend in trouble, and this cool thing came to me.. Christian Concerts! They are so fun, and so many cool people who love God and Jesus go to those things. If your friend likes Rock, Country, Pop Music, whatever, you can find the Concert this Summer, and it's all based on Worshiping God, it will honestly move his Soul and Spirit, both of you would probably make some really awesome friends there too, maybe get invited to a Church or Bible Study. Jesus can turn anyones life around no matter what a mess they seem to be. It's really a fun new lifestyle filled with Love and Hope. Music is such a Powerful way for God to reach His lost people. That is my best advise to you in helping your friend!!! (Without seeming like you're shoving Religion down his throat) 'you know'.