Security blanket

While most kids have a teddy bear, or a blanket that soothes them at night, of course my child has to be difficult. My hair is his security blanket. I already had thin fine hair before Jaxson was born, and now it is broken really thin fine hair. All he wants to do is rub my hair through his fingers, and it relaxes him like nothing else. When he wakes up in the middle of the night, I just put my head near his hand, and he grabs a chunk and falls back to sleep in a second. I wonder when this habit is going to stop....