write + the thing to do is
kaku koto da
the thing to do is; you'd best do
meaning: the thing to do is write
焦らず、少しずつ慣れることだ。
aserazu, sukoshi zutsu nareru koto da.
Don't rush — the thing to do is get used to it little by little. neutral
そんなに結論を急がないことだよ。
sonnani ketsuron o isoganai koto da yo.
Don't rush to a conclusion like that. casual