I thought you could use a post from someone who actually failed the first year of medical school and just repeated it. I went through a lot of what you're going through right now and if you want to talk about it I'm more than happy to.
For me the big thing was relocating and having to explain to my new classmates what I had been doing the year before. You're always afraid to be accepted into the new group of people. But I found having a sense of humor about the matter really really helped me get through having to explain things. My lab partner said something along the lines of "Last year I thought it would be a good idea to prepare myself for medical school by taking a graduate level anatomy course." My response was, "Yeah, I did pretty much the same thing... except instead of anatomy, I thought I would take all of the classes." So if you want to talk more about this, pm me and we'll talk.
I got through the first year the second time at a different campus (it's a state school so they do that), without the personal and family problems that caused me to not care about school anymore, and I've done very well for myself after strongly considering trying to get out of med school after everything that happened. I'm interested to know what you want to go into though. I want to do sports medicine which is pretty competitive but I don't even worry about interviewing for it. Anyone here who tells you you can't get a residency by repeating the first year is full of crap. Confidence goes a long way and if you're sure this is what you want to do with your life, kick ass next year, take some names, and aim high. Don't let it get you down. Use it as a motivation to do better. Show everyone what you're really made of. And PM me if you want to talk more. Good luck!
Shane