Family background and which Halachot to follow.

Hi, please help me choose understand my minhag might be according to Halacha

I was born Chabad and raised this way for 14 years
Then I went off the path
I am now a Baal Teshuvah

I was a Baal Teshuvah in Australia, then moved to Israel

My family background is Ashkenaz

By Halacha, must I follow the minhag of Rema and he be my Rabbi?

Is there a minhag to follow what my dad raised me with as Chabad?

Does the minhag change when I move to Israel?

And according to Rav Ovadia Yosef what would I do?

Thank you for your question. 

Whether to follow the Rema or the Mechaber, is less about being Chabad but rather depends on your family background. If you come from a Sephardic background, then you follow the halachot of the Mechaber. If you are of Ashkenazi background, then you follow the halachot of the Rema. 

Wishing you much success.

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