My recommendation is to be honest about your desires and value system and see which path lines up best with that. For example, it could be that AI provides the

My recommendation is to be honest about your desires and value system and see which path lines up best with that. For example, it could be that AI provides the most potential monetary reward by a large margin if you do it well. But maybe it's not the most interesting to you based on the options you have. It could also raise the risk that whatever you create is used to displace people from their jobs and that might not appeal to you either (even if it may very well be done by someone else down the road and could be inevitable). Maybe healthcare provides a more emotionally rewarding experience but is less profitable in the long run and may or may not have the same level of scalability as AI. Maybe it's more labor intensive which creates jobs and requires more day to day oversight, involvement, and less creativity but ends up being more fulfilling. Perhaps your energy option lies somewhere between those two. I don't know. But you should honestly evaluate the long-term road map and impact of your plan to see how you imagine things shaking out in the end and see which of those visions seems more fulfilling. It's possible going for whatever is the most profitable is what you want and that's fine. It's also possible that you may find the impact of one of the options to be more emotionally fulfilling and might value that much higher than just seeking the highest income. Another, simpler version of that recommendation I've seen is the old advice of trying to imagine what your ideal work day looks like and see what path can best provide that to you. But I find that advice to be a little superficial in that it only takes into account what your schedule and tasks may look like, not what you get out of the job. So it's also something to consider, but along with everything else.