Here's how you can block friends and enemies from posting to your Facebook Timeline.
1. Click the gear icon in the top-right corner of the Facebook page.
2. Click Timeline & Tagging.
3. Go to the Who Can Add Things to My Timeline.
4. Click the Edit link
5. Change the setting to Only Me.
6. Click the Close link.
For more, see the original article at the link below.
Block friends (and frenemies) from posting on your timeline | Here's the Thing