On your thought "which one would bring the most value to the most people": Thats same as starting business. Where you see lot of rich companies in market its a good market with lot of value. Take personal development for example, ton of people doing that, there is obviously market for it.
Which one you should pick? I say pick any of them, but do the best job you can on it.
Do really world class quality work. We are happy when we bring good, quality stuff into this world.
To expand on my point that Steve and others disagreed with earlier, if you are interested in personal growth (well many here are not, it seems you are here for entertainment only) give it a good 30 day trial.
Try doing your job, the job you are doing today, well. Do it damn well. Do it world class good. Forget your negativity, drop your preconceptions, try to do quality work. If you can do that for 30 days and be honest about it, let me know how you feel after 30 days.
After thinking about this some more I conclude that we are happy whenever we do quality work. Maybe its what you dream about, but it does not have to be. You know quality work when you see it. You can't fake it. You feel it. So try doing that. Bring quality into your work and see what happens...
Or you can just dream about it. Things in our dreams are always easier to do than real work. When we see things in our dreams we see imaginary work. This picture masks the real work that needs to be done to achieve them. Most give up when they actually try to implement dreams because it just did not look that hard when they dreamed about them. Be ready for it and may force be with you
