How to Use "obsess" with Example Sentences

1. He wants stuff to obsess with at home .
2. Why do some men obsess over how many partners a woman has had ?
3. The project seems to obsess him .
4. Lin says in that interview that he has learned not to obsess about stats and championships .
5. The sad truth is that the pushy parents are being quite rational even if boring and tiresome to obsess over the qualifications that their children get .