What do you actually have to do to get promoted

So, I have been here three years, and I have seen people get moved up who straight up didn’t deserve it and aren’t good at the job. It makes me wonder what you actually have to do to move up. I have made really bad decisions, choosing Publix over really important events in my personal life. For example, I chose to come to work during the funeral of my grandfather because I was afraid it would hurt my standing within the company. This is one of the more minor things I chose Publix over. Like, it is really bad, and it makes me wonder: why did I bother showing dedication and putting myself in harm’s way if it didn’t mean anything?