Great question! I use an Ipad Pro + Apple Pencil (Series 2) with an app called Procreate. It is like having a whole art studio right in my lap. Thousands of options for strokes, mediums, and color palettes.
YES! Write from the heart. Things that are important to YOU. When you get 'stuck' - take a pause, sit back, reflect. When the time is right, you will have the ideas that will come to you. Write it ALL. You can always revise + edit, which is the beauty of being an author.