Once you have been working for a while and have experience under your belt it is easy to stop learning and just think that all you have to do from now on is to carry on doing it.
That is wrong. This study showed that people who believe that they can still learn and change were able to develop and improve their performance.
If you believe you can learn then you can learn.
Don't believe the rubbish about Old Dogs and new Tricks.
The further along you are in your career, the easier it is to fall back on the mistaken assumption that you’ve made it and have all the skills you need to succeed. The tendency is to focus all your energy on getting the job done, assuming that the rest will take care of itself. Big mistake.