Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to write your first book [title] Choose a subject you're passionate about. [step] Writing a book is a significant undertaking that will require a lot of time and energy. Choosing a subject you know and care about will help propel you through the daunting process.

Ending1: [substeps] Find a subject that you feel like passionate about. Some things you might like to discuss with your friends and family include: city, town, country, or organization. Ending2: Explore your passions and interests when choosing a topic and make sure you have something important to express on the matter. [substeps] Choose a genre that you love to read and have explored in depth, whether it's horror, romance, or political intrigue. Ending3: [substeps] As you begin to write, you'll be able to discuss changes you're not familiar with using strong explanations and/or those you don't know much about. [title] Search for new subjects within your genre. Ending4: [substeps] Make a list of topics or activities that are important to you, as well as the key concepts you'll need to develop by the end of your book. For example, if you're having trouble with your math problems, write down 7 historical events that inspire you most often and for which you're passionate.

Answer format: ending1/ending2/ending3/ending4