祖母そぼにもらった時計とけいだから大切たいせつだよ。

sobo ni moratta tokei da kara taisetsu da yo.

It's a watch I got from my grandmother, so it's precious to me. casual

毎日まいにち少すこしずつ続つづけることが大切たいせつです。

mainichi sukoshi zutsu tsuzukeru koto ga taisetsu desu.

Keeping at it a little every day is what matters. neutral