I also handle my chicks from a young age. I currently have a new buff orpington who is so bad, she sits on my shoulder. If I put her down, she sits on my foot. I also have a set of pekins who can't wait to get out of the run so they can sit on my lap. I find that they seem to get more tame when they become older. All chicks really want to do is explore and gobble up everything in site and my picking them up interupts them. I also try to coax them from the front. I have a special call for them when I give them food and treats and the recognise it. once they come to me if I called them I talk in a soft voice and they always seem interested in what I'm saying.
There are however some of my chickens that just don't trust me. One of my little roos will NEVER let me touch him and he keeps his favourite hen away from me too. but my other girls are pretty tame.
Yesterday my 3 year old went and sat on the ground and my pekin roo went on over and ploffed himself down on her lap.
I also have a rule of no chasing. I never chase a chicken unless absolutely necessary. My chickens free range all day and then by 6pm, they all go into the copp by themselves. Then I go and say goodnight and make a point of naming each one and close the run till tomorrow morning. When I open the run in the mornings, I don't step away from the gate, so if they want to come out, they have to pass by me first. now they vitually push me out of the way! ;-)
what breed of chickens do you have?