Audhd help with choosing a career?

Hey guys.
I have audhd and find it hard trying to hold down jobs etc.
I recently got a wonderful opportunity of being employed as a trainee dental nurse but quite overwhelmed with trying to fit in with all the workers in there who already knew each-other and I also feared burning out because the hours were quite long.
I really would like to see myself working in healthcare but I’m really unsure. I also have dyscalculia and I’m absolutely terrible with anything to do with numbers.
It seems like I want to be on my feet all day in a job because I get bored otherwise.
I don’t mind dealing with customers/clients but when I get into a job I find it hard fitting in with people who have been working in the job for a long period of time who already have their groups etc…
I’m feeling really lost in life and I just don’t have a clue what to do.