Being a screw up at work

I've had a ton of phobias that I can remember; like bees, spiders, and even throwing up (that was my oddest one), but the one that's been causing me a lot of anxiety is being a complete screw up at work. See I've recently got a department transfer at the grocery store I work at, worked in produce for 2 years and now I'm in the deli. I've had my one plus weeks of training so I pretty much got it down now, and I think I'm doing a good job, some of my coworkers think so, but some just don't. Like I feel like nobody likes me and I don't want people to feel the need that they have to babysit me because I'm still technically the rookie. Maybe I did have a bad attitude on one occasion, but I don't feel it's necessary to hate me. Like half the time I don't even know I'm screwing up till they tell me. I like what I do now, I'm just worried that if I screw up here I may be out of a job cause I do not want to go back into produce for reasons I don't want to explain right now.