Hi, J..
I know sleep philosophies are a very personal matter... and can often be a touchy subject among friends. I really felt comfortable with the co-sleeping/attachment parenting philosophy for my young infant... as he got older, I felt some other parenting philosophies were also valuable. Some of my friends made me feel really guilty for deviating from the norm of my group. Whatever you decide to do, just trust your gut/your own mind, no matter what others tell you. I would encourage you to keep an open mind to various alternatives in order to find the right solution that works for you. I really don't think that there is one philosophy/approach that is truly effective for every stage of growth... just my opinion.
My son just turned 19 months and has fabulous sleep habits now... we did the "sleep training" process with him when he was about 5 months old. I would recommend reading the Weissbluth and/or Ferber book with an open mind. When I read the books, I realized that our son had strong sleep associations with two things: my breast/nursing and being held/rocked gently. He would fall alseep, we put him down.... then 2 - 3.5/4 hours later... awake and screaming... then, I would nurse or my husband would rock... and same thing. He would basically wake as he was coming out of his deep cycle and instead of soothing himself naturally back to sleep. By nursing him/rocking him, we were denying him the opportunity to fall back to sleep on his own.
My husband is much "softer" than I am, so I waited to do the sleep training while he was away on business. I knew that he would not be able to handle hearing our son cry. He was gone for about 7 days... when he came back, our son was sleeping through the night, and taking two naps a day happily... and he was still getting fat off my breastmilk/no solids. It was really difficult hearing my son self-soothe/cry, but I just focused on the end result... I needed to sleep, but I also felt that my child was not getting the rest that he needed either. He was so much happier and alert once he was sleeping through the night and on a solid nap schedule. I also felt like I could be truly attentive and alert and happier with him when we were all getting a good night's sleep.
Now, he is 19 months old... some of my friends who were scolding me for being a terrible mother have said that they should have done this with their kids... their toddlers are having a terrible time with sleeping and napping... still. All babies are different though, and I have heard stories of babies that just magically sleep through the night or grow out of it. My mother swears that I did... and made me feel so guilty when I would let my son cry it out.
Enjoy your little one and take care.