汲取教訓..英文是什麼? thx

learn one’s lesson

e.g. I’ll never do that again, I’ve learned my lesson! 我再也不做那種事了，我已有了教訓！

Hello, my suggestions as follow:
1) You can learn a lesson from your own experience.
2) I have learnt the lesson after finished my project.
Thank you.

learn a lesson learn a lesson learn a lesson learn a lesson learn a lesson