One thing I cultivate in myself is to start with something when I don't know what to do. I'm developing an onboarding for my app and I had literally no idea how it should look in the end. What helped me a lot is to start with something dumb and ugly. Iterating is easy then
Even this tweet above :D I just started writing whatever it was on my mind and then deleted the less necessary parts. Much easier than trying to come up with something "final" in your head
