Stereo microscope and good fine curved tweezers. I'm 60, don't have the steadiest of hands, and my prefered parts size is still 0402. I hate doing 0201, but I can. I have Bauch & Lomb stereo zoom 4s. You can get them on eBay for < $200. Fluorescent ring light. Metcal iron with fine tip. Put solder on one pad, hold part with tweezers and solder that one pin. then solder the remaining pins. Use fine solder. I have a 1 lb roll of Kester 44 63/37 0.02 in diameter that hopefully will last me forever since I detest lead free.
Stereo microscope, good light, good fine tip curved tweezers, fine leaded solder, good iron (I have Metcal) with fine tip. If I'm missing ANY of these I can't do it. But with ALL of these items I can. Hand shaking does make 0201 frustrating.