If you want to write a book, write it. If you want to be a musician, make music. If you want to start a business, go ahead and start it. Don’t be afraid of making mistakes or failing; you learn best through failures. Find someone who is a master at music or at business and attach yourself to them. Get an education at their feet, doing whatever tasks they assign you. Immerse yourself in the world or the industry that you wish to master. This is better than all the books or courses you could read or take in the world—learning by doing.