I had a very similar problem 2 years ago. I was 38 at the time. For me it was burnout. I had been at a failing startup for 6 years. I took about a year off and removed a lot of stress from my life and took a part time React/NodeJS job, and got really good at react over the past year.
I have realized that a TON of the dev working being done on JS frameworks is by people that have no idea what is going on under the covers, they are just following examples and best practices and making applications work. I'm not saying that is wrong, but for people our age we are more used to understanding things at a lower level and that is becoming almost impossible with the current JS framework situation.
I have realized that a TON of the dev working being done on JS frameworks is by people that have no idea what is going on under the covers, they are just following examples and best practices and making applications work. I'm not saying that is wrong, but for people our age we are more used to understanding things at a lower level and that is becoming almost impossible with the current JS framework situation.