到头来 (dào tóu lái): in the end; finally; as a result

He stayed up late playing video games every day, and in the end his health deteriorated and he even lost his job.

She scrimped and saved for ten years, but in the end she was cheated out of every last penny by a friend.

The two companies fought tooth and nail, but in the end neither made any money; instead, a third company grabbed the market.

I tried to persuade him for a long time, but in the end he still stuck to his decision, and there was nothing I could do.

When I was young I didn't know how to cherish things, and only in the end did I realize that family is more important than anything.