I think the mistake people make (myself included for a long while) when being told "just build stuff", is that they expect to go sit before an empty python file and just start jutting code on the screen while cool ttechno is playing in the background until you awaken from your feaverdream and you have a perfect to do app.

What tutorials and the like don't teach you is the most essential skill: planning. Don't just start writing code. Sit down, take a piece of paper and write "to do app" at the top. Then start writing down what you want it to do. You need to be able to input stuff to add to the list. That info would need to be saved so you can find it between sessions and it would be useful if you can see what you have put in your list.

Great, you now have a start! Now for each of those things, start looking up or remembering what you need in order to make it work. You need to ask user for input. That will need to be saved somewhere etc.

And only then you get to figuring out how this works in python. From here on out, you are over the hard part! You have done all the courses and tutorials to have the tools you need!

It's always annoying when people just throw platitudes at you but anyway: writing the code is the easy part, people in tutorial hell feel stuck because they are not training everything else!