Keep doing the work of your choice as long as your health allows.Sometimes I feel that people have unnecessarily connected age with working, whereas our age will never be a hindrance for some work which we like to do. Rather, if we look at it differently, age is a parameter of our work experience.
So as long as your health is allowing you then you should do your favorite work and don't need to listen to the world. When a person retires at the age of 60, perhaps due to his mentality or the advice of the people of the world, he starts feeling weak or old. But sometimes some people who keep doing their favorite work continuously, it does not matter whether they are 30 or 60, they just keep working with their dedication.
Here the importance is of favorite work if you really feel happy and joy by doing that work, then never stop doing same work, whether it is writing work, or cooking or whatever you like to do.