To train to become a hairdresser at the age of 39, or would I look ridiculous? I am a freelance illustrator and have very minimal experience in the 'typical' job market, and absolutely zero experience with hair. But it is something that I have always had an interest in, so would like to at least test the waters.
Why not? Lots of people have career changes and if it something you want to do then give it a go. Lots of employers like more mature staff as they are more reliable and if you find out its not for you later, you still have a really useful skill.
Our local Uni, for example, has loads of mature students, retraining as teachers, nurses and social workers for example. Life's too short not to try.