[jkbonfield]

I know I'm not the best at anything I do, but when combined the overlap makes a niche for me that has so far worked out well. Pure luck frankly.

However that is only because the skills I'm thinking of aren't in themselves hugely common. I'm not mega skilled at them, but the relative rarity of some means the overlap really is quite small - fortunately!

It's not going to be good advice if your key skills are, say selling things and being super knowledgable about cars. Oh look, an obvious union but that combination is popular already. So I'd say start by becoming good at a couple niche skills and then see where you end up.