Design thinking is a never ending process. First you create one thing then you have to think "what can I do to make this better" "what can I do to make less mistakes?" "What could I do to get this done quicker?" Then you think what can i do next and what can I make? Your mind will never stop thinking about what you could do to make things better, what you can do next, what you could do to make that next thing better. Design thinking is a never ending process.