Okay, well I followed my instincts with my first baby and most things were extremely hard, I had no idea what I was doing despite reading everything going. I read GF and I found her routine structure helpful (not the leaving the baby to cry part, I tried that once and never ever again!!!) I found I was really struggling to cope without structure to my day, so implementing her structure along with attached parenting worked for me. I spent all day with my dd but found sleeping beside her impossible as I could not 'switch off' so we moved her to her own room at around one years old and that worked well.
My second baby I did the same. Got into a very good routine, but not too strict ie exact feeding times etc - but a relaxed version of GF, a routine and we all really benefitted from this. Really we did. I was very careful to ensure that we did it kindly, but my baby slept extremely well, and I could plan and organise my life properly with another child to look after as well.
I was often considered to be a very together parent, and that was largely because I knew what I was doing each day, and could think clearly.
Had I not introduced the routine, and just did things spontaneously, we would have all suffered. So it has its place!
I don't believe in ever leaving babies to cry though.