Will i get used to it?

I work 8 hours at my new job and my feet hurt so bad when i get of work. We get no breaks and we can't really sit anywhere.

Today i went to the bathroom, took off my shoe and rubbed my feet cause my heels were hurting.

I lean on the counter sometimes to take pressure off my feet but it hurts.

Will i get used to it? I've worked jobs before but it was like 5 or 6 hours at a time. And for the most part i was always doing something.

I rub my feet everytime i get off at work. And i don't have much money so I'm using running shoes as work shoes.

Is there anything i should be doing to make this better?