Awesome! That is SUCH a big mental motivator!
I threw out all of my heaviest weight clothes a year ago. Considering I was still wearing the same maternity clothes I wore while pregnant with my son a year AFTER I had my daughter... it was easy to say goodbye. They were so stretched out and ragged, but fit.

Then this past spring I threw out all but one pair of my size 12 and higher pants. When my weight went back up and I no longer had pants that fit, that only gave me one option: LOSE. I REFUSED to buy bigger pants.
I'm very happy for you!