How hard is it to breastfeed and work full time?

I go back to work in a month. I always planned on just breastfeeding up until I go back to work. But I’ve actually loved breastfeeding so far and since he’ll be in daycare I know it’ll be good for him to have my breast milk. BUT I get overwhelmed super easily and I’m not sure about adding pumping on top of my list of everything I need to do daily 😕 it may sound selfish and I’m going to at least give it a shot. I just want to know about others opinions?