But how would you define luck, anyway? I think it was Oprah who said something along the lines of "luck is when preparation meets opportunity".
WRT finding interesting ideas...
We used to talk about "increasing your surface area of luck" by meeting more people, getting exposed to more ideas/ opportunities etc.
If "Innovation happens at the intersection", then the more you come into contact with, the more your chances of finding an interesting (non-obvious) intersection between problem and solution, or two entirely different solution domains.
WRT executin: Gary player = "The more I practice the luckier I get"