On delayed gratification...
People struggle to delay gratification. In order to do exceptional things you need to either be totally in love with the thing that you’re doing in all ways, or delay gratification. I believe that all things require an element of doing boring stuff and so delaying gratification remains a pivotal driver of success.
Similarly, humans often perceive more future pain to be less bad than a lesser pain received earlier. Part of this is justified based on the possibility that the future pain will never come, but this effect exceeds that level.
Delaying pain leads to indecision, and indecision allows you to spend less time to intensely act as the aire of indecision lingers as you half act towards something.
Learning techniques to optimise for delaying gratification will almost certainly yield reward – if anything doing boring stuff well is one of the few things that school teaches us.
Where school fails, is that at school things are too formulaically bound by time rather than activity. Success in startups and life is often about working to outcomes over specific timescales.