You can use a notebook, computer or tape recorder to have a journal. Collect your thoughts, write about your past, present, future, feelings, day events, whatever. You should spend at least 15 minutes per day doing your journal. In a month look at what you wrote. Keep a journal for at least six months for therapeutic reasons.
Painting is a lot of fun it can be done on canvas or computer.
Geometric shapes are the best way to get started. First take a look around. Study the geometric shapes you encounter every day, from a bowl of fruit to a person face. Now practice painting the shapes. Remember to take your time to develop your skill.