I reflect clearly on what tools / techniques I'm already comfortable with and think of ideas for some projects I'd like to do. Then, I figure out how to bridge the gap. E.g. I'm super comfortable with Python so I could just learn how to do game dev in Python until I feel comfortable / need to learn C++ / Unity / whatever.

You can do computational art even in Excel! Or any programming language. Start with the basics, use the positive feedback loop to get over bigger hurdles (learning specific tools, specific techniques, recreating papers / projects in your tool, etc).

Find the right balance between flow and deliberate practice / deep work and alternate!