Be a noob...
Make the smallest/easiest game you can possibly think of.
Make slightly bigger, slightly better games, until you feel confident to attempt your dream game...
Make that dream game!
(of course, you'll have underestimated the scope massively... lol get rekt)
If you manage to complete this step,
you are now pro.
(gl hf)
I'm just trying to make games that feel new again.