Washing hands in kitchen sink

The other day Kathryn had a post about habits. (BTW..Note the first ever link. Yes, Aunt Heather can learn! Thank you Janet, for being my teacher.)

I felt the comment I left, reveiling a habit of mine, needed more clarification.

Here is my comment to her post: (the portion I want to clarify)
"I also out of habit, only wash my hands in the kitchen sink."

Kathryn's reply: (Concerning this issue)
Heather: If you only wash hands in the kitchen sink, does that mean you have to walk from the bath each time you pee to do it??

Well, the answer to that question is YES! I shake my head in shame.

So..here the story goes..

Hubby and I lived in our old trailer, (that hubby refers to as "Shack #1", we are currently in "Shack #2) for 17yrs. It was very old and out in the boonies, the septic probably wasn't up to code and we always had issues with it. Pipes always breaking, cause the ground was sinking or moving (it was a very sandy area). Tree roots clogging the pipes and giving us a hard time nearly every year. So on and so on...

Well..about 7yrs ago, the pipe to the bathroom sink busted. Hubby being the handyman that only works on the house when it just can't be put off any longer, decided that the bathroom sink was not necessary. The kitchen sink will do just as well. I think he just got tired of fighting nature. It was a long ongoing battle between him and nature. Nature won!

So..for 7yrs I made the uncountable trips to the kitchen sink, to wash hands, brush teeth, ect..ect..

This is what formed the habit!

We have now been living in Shack #2 for a year and I have just recently become aware that this habit still exists, even though it is not necessary anymore.

We know have two fully functional bathrooms!

They (idk who THEY are) say..it takes 3 months to form a habit, I wonder what THEY say about how long is it going to take to break this habit? CAN it be broken?