One of the best tips I’ve found through the internet (I found this from youtubers and streamers)…
Just start something. Browse some free patterns for a bit, or wach a movie you like for inspiration… and start doing something. It doesn’t even have to be something you’re planning to sell; get your fingers moving.
The hardest part is always getting started. Once you’ve started something, trust in your OCD to drive you to finish it. (And if you’re me, don’t stop doing it or it will never get done. XD)
Maybe try something like Habitica, where you can set a goal to do one-three products per day of whatever you want to sell, and like, go out for ice cream or something when you’re done. Hold a ‘dessert’ over your own head for it, if you have to. Even if that’s not actually dessert.