Anti bucket list - What are the things you will never do again?

I saw this somewhere on social media. I quickly wrote it down. I refused to read the comments so I am not biased. I want to have my own unadulterated list. 

It is an interesting twist to a common question. I have a very long bucket list and I never thought about things I would never do. So this is a thought experiment of sorts. 

After much deliberation, the only thing my mind thinks about revolves around time. I don't want to waste time on silly things like I did in the past. The question is identifying exactly which things I want to avoid completely. 

Like most people, I wasted time and effort on individuals in my teenage years that did nothing for my wellbeing. I desire to fit in was stronger then. It is still a deliberate effort to push away the urge. I have also signed up for a lot of things that I should have said no too. It is getting easier to say no as I get older but I am not where I want to be yet. If something is killing more time than the opportunity cost is requires, I should pass. I realize that is easier said than done. 

I can't think of anything else to put on an anti-bucket list. I should revisit this questions in the future again and see what changes.