I come from a family that has an odd religious dynamic. We identify as Shia but pray the Sunni way. I have been trying to learn more about Shia Islam for a year now and have switched my way of fasting, wudhu and prayers etc. But the mental barrier I experience from my mother gets unbearable at times because she doesn't believe in a lot of Shia concepts or the fact that we still mourn for the Imam. It usually starts as a discussion but then turns into an argument and I fear displeasing Allah if I talk back to my mother or raise my voice at her. It also frustrates me because she disregards the high importance of the Imams and their sacrifices and it hurts me when she doesn't understand and attacks my beliefs.
I don't know what to do in this situation, Sheikh. Please tell me some dhikr I can do to ease the situation at my home and please keep me in your prayers.

1- Be patient. Such matters take time. Don’t bring up topics that cause tension with your mother. If you do, find an effective, soft approach. It’s very difficult for a person to change his/her beliefs. It takes time and effort.

2- Do sujud for several minutes each night and with a deep breath each time say: سبحان ربي الاعلى وبحمده (subhana rabbial a3la wa be7amdeh)

3- Before sleeping, say 100 times لا اله الا الله (la ilaha illa allah) and take a deep breath each time

4- Read this Dua:

http://www.duas.org/mobile/sahifasajjadia-dua54-removal-of-worries.html

5- Read this Dua daily:
https://www.duas.org/Amn.htm

May Allah facilitate it for you.