I want to be happy. That's all I want in my life.

I want to be happy. That’s all I want in my life.

I want to know if the second part of my sentence is correct (that’s all I want…).

Thanks!

Yes, it’s correct.

Please remember: If you wish to be “perfect,” you should include the relative pronoun: “That’s all that I want in life.” (It’s not necessary to add “my,” for you have already mentioned yourself twice.)

James

Thank you!