With All One's Might
All Out
noun, な adjective
You have only one life so do everything with lots of eagerness (懸命). Do everything with all one's might. Go all out.
Everything except the 生 uses the readings you learned with the kanji, and you learned this reading of 生 when you learned 一生. You've really been going all out to learn these readings!
合唱団で歌う娘の一生懸命な姿に感動しました。
I was moved by the sight of my daughter singing in the chorus with all her might.
ほら、みんな一生懸命がんばってるんだから、一人だけサボるなんてずるいよ。
Look, it's unfair that you're the only one slacking off, because everyone is working so hard.
遅れを取り戻すために一生懸命働かなくてはいけないのは分かっているんですが、中々難しいです。
I know I have to work my hardest to catch up with everyone, but it’s difficult.