I usually finish the words that people are saying, I've realized that habit is "little bit" annoying so I try not to do it.

Swearing sometimes :D

Yes! My bad habit is to go to sleep very late. I can relate to you about the sweets - I absolutely love chocolate. I eat a lot of sugar too, especially if I'm in a sad or an angry mood.

Can you teach English for me?

Cracking my knuckles and joints