Haste makes waste. Haraka haraka kayina baraka. (Haste haste has no blessing)
You are never too old to learn. Enlimu kayina mwiso. "Education has no end(ing)."
Something is better than nothing. Yembe Yadodo sawa sawa na yasukari. "A dodo (a type of mango) is the same as (i.e. just as good as) Yasukari (a type of banana). (Don't be too choosy!)"
All good things come to those who wait. Subira Yodja Naheri. "Patience pulls (i.e. attracts) success."
Better late than never. Homa Nowuwaswili. "Delay so that you may arrive (i.e. reach your destination)."