I broke off an engagement, and BH it was a very smart albeit tough decision, and i am happily married now. I just read here that someone said
“how do you know it is for the better and that it is a good thing”?. If you are engaged and know in your heart it is NOT right, and you are not happy and this is not the person you want to spend your life with and have CHILDREN with and go to bed with every night for the rest of your life with, calling it off is a blessing. Its only unfortunate that it got that far to begin with. In my situation it was a very quick shidduch, we seemed to have enough in common, everyone was getting engaged, but then weeks later i just realized it was not the person for me. I caught the person in a number of lies and (sketchy) situations, a few family members had some bad feelings about it, i just couldnt go through with it. I dreaded waking up every morning. Then i did it. BARUCH HASHEM. It was hard, it was embarassing, people spoke about me and my family. For a few months..then it was over. 2 years later i am SO happily married and in love with my husband and more mature. It WAS for the better.