I don't understand why you think rocking your child to sleep is a bad thing. It encourages mama/baby bonding, is a great way to slow her down at the end of the day, and is a very special moment between the two of you.
My daughter is also 14 months old. She has never been a great sleeper... life is just WAY to interesting to sleep! ha ha ha That being said, things are getting better. Most nights I still rock her to sleep. Typcially I don't rock until she is 'out' .... but just VERY VERY sleepy. So that when I put her in her bed, she rolls over and goes right to sleep.
There are nights where she just looks at me wide eyed. I will rock for a little while, and then gently say to her 'it's sleepy time now. Mama is going to put you in your bed'. I gently go to her bed and lay her down. We don't hear anything more from her.
I started doing that to changed things up and encourage her to go to sleep on her own without my help.
Quite honestly, I hear many parents trying to have their kids grow up so fast. They want them to sleep through the night, not need them, and all that. Why? Falling asleep in mommy's arms is a wonderful way to end the day. It is safe and secure. It offers your daughter a feeling of peace and 'I'm totally safe. Safe enough to go to sleep.'
I honestly do not see anything wrong with providing our children with such a peaceful loving atmosphere that they can't help but to go to sleep.
I truly believe there will come a day when I will not be rocking my daughter any longer, but she will be able to lay down at the end of the day and go to sleep. Until then I will rock.