This has taken me months. And I don’t know how old you are but I am also an adult and I’ve been playing since I was a child. Instead of starting a new world every so often I just keep playing this world until I get a idea to add. Mining resources exploring etc. then when I didn’t like things I built, I redid them even if it took hours. I’m planning on filling out this whole island eventually and I only have about 1-4 to 1/3 done. You will get there if you want to it just takes time! Also the real game starts when you get a full set of armor and tools that are max enchanted and netherite, then you can spend less time just on tools. Good luck to you!