Any success story of mathematicians who switched field and realized they are better at something other than what they started with?

It could be you , or someone you know or someone famous. But I’m trying to venture into that path now. I know all fields require some learning, but boy the amount of reading I have to do for every single one of my problems just to learn new fundamentals to do problems is so tiresome. I’m a postdoc in my last year and I still only have 4 results. And not impressive either just took a long time from reading so I want to go into something where I can flex my problem solving skills more than reading. Do you know of anyone who switched field and realized their true calling lies somewhere else?