So we are currently living an interesting time in which AI can just do everything for us. Therefore my simple thought is the future will be predicated on those individuals with the most creative thoughts? 
Simple ideas include just spending maximum time outside walking around, no AirPods on, no phone. Allow your mind to go fallow. In fact, boredom and under stimulation is often the best way to spark more creative ideas.
Second, allow yourself to have “bad” thoughts. Immoral and unethical thoughts by traditional standards. 
Third, personal curiosity. I’m really interested in ideas that have not yet been explored before?