I've got 7 3-week-olds, and I've been in a lot of these threads agonizing over how to make them like me. I've gone from a hands off approach, to a hands on approach, to a more time is best approach.
Mine are in a brooder in the garage because I have cats and a dog who would eat them, so they don't get as much exposure to people as I'd like. While they were in a tote-style brooder, they were really skittish, hard to catch, and seemed to despise me. Of course, I was just this big thing that swept down from above while they were trapped with nowhere to go.
I moved them to a brooder on the floor with mesh sides, and now I sit in front of it and remove a side. I kept trying to pick them up, and they would scatter. I stopped that (against the advice I got on BYC) and the chickens got really friendly really quickly. Being on their level and having them not feel as trapped seemed to make a big difference. They can easily fly out into the garage when the side is off, and sometimes do, but always rush right back in.
The chicks swarm me instantly now as soon as I remove the side. If I put my arm in, they peck at my freckles and always check my hand for food. The two most brave, my black australorps, are at the point now that they are flying onto me and walking up to my face or roosting happily on me. The others still don't want to be picked up, but they're all much more at ease around me.
Most of the advice I got told me to force them to be held, and while that has definitely worked for other people, it kept backfiring on me and my chicks were more and more nervous, probably because the only time they saw people was when I was bothering them, since I could not put them in the house where they would be able to see me all day and just get pestered sometimes. But now that I am letting them hop up on their own and spending a LOT more time with them, they are taming up to the point where I think they are going to be downright annoying. Now I'm petting them a lot, which they run from, then come back for, then run away again. They're ridiculous.
They still startle easily and are terrified of anything new (pine shavings, OH NO, refilled waterer, OH NO, the roost, OH NO!) but as far as being as afraid of me, they've come a long way in about 4 days.