Recognise that waiting for motivation to strike is a bad idea.

Instead just get started with the smallest possible step you can just about manage to do. And then do another smallest step. A lot of times you almost automatically keep going and the motivation then arrives.

Maybe the first step is to create a basic "Hello World" application. And then a few empty functions/methods that flesh out what the app needs to do. Then maybe a few of those methods/functions are really easy to do (or AI can write them for you) so you quickly do those. Etc.