I agree with tpk, I'll still throw in my 2 cents on it.
the idea of an 'accountabililty partner' is kinda like the whole 'quiet time' concept. I mean.... they're trying to force a Biblical concept (such as accountability and consistant bible study and prayer life) into some an over-simplified activity-thing. we are DEFINITELY supposed to be held accountable by other christians, but the idea of 'getting an accountability partner' usually fosters the 'checklist-mentality'. (did my devos-check, prayed-check, confessed-check....)
accountability shouldn't just become this thing where you meet once a week and talk about how bad you feel cuz you looked at porn and admit that you hardly touched your bible. the focus of accountabililty should be first and foremost to show what you're learning in your spiritual walk. the biggest encouragement to a Christian who is stuck in a rut, is seeing how other people are growing.
I've surrounded myself with friends who are always talking about how they're growing and what they're learning. whenever I'm stuck in a rut, or failing spiritually, I see what God's doing in their life, and I want it. and I'm drawn back to my re-focusing my own relationship. THEN, I share with them how their walk has encouraged me, and refocused me! and THEY also get encouraged through it and are strengthened in their walk!
to get friends like these, you HAVE TO, HAVE TO, HAVE TO step outta your comfort zone tho! but once ya do it, it's SOOOO easy and amazing! I admit, i've been blessed with an amazing church where a good HALF are completely legit about REALLY pursuing thei relationship with God in high school no matter what. (which from what I've seen, is unheard of in youth groups) it's easy for me cuz I'm surrounded by so many people that want it so badly. but I still had to, at one point, step out of my comfort zone. and if they're really serious, the rest is easy.
and also kno, at times you'll hate that you have friends like that. sometimes I LOVE talking spiritual things with other people. but I admit, sometimes there are times when it's the last thing I wanna do.
and now i'm rambling, and i'm tired, and i don't even know if what i just typed made any sense