Unfortunately these english words I learned the same method, I know man — мужчина (russian) and with added WO-man — женщина (russian). Regrettably «mAn» and «wOman» don't fit to my system. I would like to know one etymological explanation; not games with visualisations :)
Draw a picture with a man and woman figures, and write han and hon under them, look at it every day till in sinks in. That really helps. Also, you may learn that han is always male and not care about hon at all; han is male in Danish and Norwegian too, female pronouns may differ.