How can I add constraints to my work to become more creative?

Copy or mimic work of people you admire. Don’t try to be “original” (in quotes because when you dig down usually even the most innovative works are heavily inspired by something else or even copy it).

Pick one thing and focus on that one thing.

Take less time to make decisions.

Be okay with not making the perfect decision or doing perfect work and detach yourself from the outcome. Just do it and move on.

For UI/design you can use something like this https://dribbble.com/stories/2019/05/07/7-design-prompt-gene...

Throw away two of your tools.

Copy or mimic work of people you admire.

Pick one thing and focus on that one thing.

Take less time to make decisions.

Be okay with not making the perfect decision or doing perfect work and detach yourself from the outcome. Just do it and move on.