Work dilemma

Me (35M) have had a bit of a crazy start to my year, my mother (69) passed randomly in her sleep, her being my only family this hit hard, returning to work I am finding it difficult to balance my job and my new life. On top of this one of my co-worker keeps talking down to me, today he did it in front of the boss and I fear he will not do much about it.

Next week a large amount of money from my mother’s probate is going to be credited into my bank account. But there’s more coming later in the year.

I don’t like not working and I love my job and the rest of the staff. Do I quit and try find a new job or do I brunt this out as it would be beneficial to my long term career.