The mind once expanded can not return to its original size. Famous Quote that rings true. Learning makes your life interesting and keeps you open to the possibilities. Here's some ideas on how to keep learning:
1. Take a class in something you always wanted to learn regardless of your background, you will never know the path it will take you!
2. Read a book, something that always interested you.
3. Connect on social media and write a blog. Everything can bring value.