what are u to do when after your grandmother, who practically raised you passes away and u have probs at work?

I';ve had problems at work since my grandmother who raised me past away and I';ve made alot of mistakes i admit that but now my boss is under alot of presure and i'm doing the best that i can but he's making all the more hard for me. Then he thinks that i doing everything that i've done wrong on purpose and i'm not, I love my boss like he was my family and i love working with him, i don't want to quit my job i like my job i dunno what to do.