It will be a hard habit to break; I've been one for years - my defense mechanism.

Thinking alike for their entire lives was a hard habit to break.

They said it's real hard to break a dog of that habit.

It's a hard habit to break, however, perfected over 20 years of marriage.

It had proven to be a hard habit to break.

Admittedly, war making will be a hard habit to shake.

I am someone whose walking trips usually have to include at least one mountain top, which was going to be a hard habit to break.

I don't mean to be rude, but it is a hard habit to break.

Even with a new coach, losing is a hard habit to break.

But they would be a hard habit to break.