There are so many different people in the world, so naturally many different viewpoints. Quite a few times your view point may be the right one, and another's point of view is completely off. At times they will insist they are right, and almost make you feel guilty, even though you are the right one!
At this point, remember these few points.
- Do not argue about it. Mufti Ebrahim Salejee Daamat Barakaatuhum mentioned in one of his majlis that if someone just refuses to understand, then do not engage in a fruitless discussion. If they persist, then leave them rather than loose your cool.
- Be patient. Some people take a longer time to understand things. When years and years have gone by with a person believing something to be right, it will not change overnight due to your eloquent words.
- Make du'aa to Allah Ta'aala. If He showed you the right path, then surely He can guide others to the right path as well.
- Be grateful to Allah Ta'aala. If it was His wish, you could have been the one with the wrong understanding.