I try to keep proper posture, but I don't think the correct chair for me exists. I need a headrest (doctor recommended) and some amount of recline. However, I cannot find an office chair that will actually recline properly. Yes, it is theoretically possible to recline, but perhaps due to my (lack of) weight, I cannot push these spring-loaded backs back without exerting some force beyond gravity, usually by pushing my feet into the ground. What I really need is something like a car seat, which has adjustable set recline. Does anyone know of an office chair like this?

Even if I solve that problem, it also seems that all office and car chairs are designed for people a little shorter than me, so everything is a few inches off.