People’s diversity investments.
Then why not diversity for your time which is more scarce than money?
Of course, be smart about it, and don’t try to do 10 different things simultaneously.
It is alright to start and finish one small project once every 1-2 months and see how it goes.
Using this strategy, you come up with something that matches your interests and skills and that the market wants too.
Even in that case, you would have tested many ideas before finding the one that works and looks like it is worthy of your attention.
Ignore this advice if you have come up with a category killer, a juggernaut that the world can’t have enough of, and if you have the temperament for the work, it will take.