I find ways to make mundane adult tasks fun, and it's greatly improved my life.
-If cleaning a bathroom I see how fast I can clean it, or experiment with different cleaning agents if I don't want to hurry. Another example is cleaning to music/a beat.
-If doing an excel spreadsheet at work I try to use new tools/features and learn more while making a regular old report.
-When paying bills I make sure I use my cheat meal so that it's a little less painful.
-I also like to team up with my wife to do tasks and have someone to do them with (if applicable)
Not only is it easier to do the adult tasks when it doesn't feel like it's torture, but it makes me want to tackle other adult tasks quicker. The real key is to just make everything as fun as possible.
Fun is a mindset, control your mind and make it easy to have fun in life and you'll most likely end up tackling that to do list you've been putting off!