1] Never think about the end of the book, the finishing of the book. It could be 300 or more pages long..., but write one page a day, or maybe two, then when you have completed your book it will feel good.
2] Just write and don't stop to fix mistakes, spelling, or look at tenses or paragraph styles/sizes/etc. Every time you stop to make changes its like you do not want to reach the end. Keep on writing until your done, then only, go back and start editing, fixing and changing where you see fit todo so. Leave the proofreading, editing, formnatting for thr end. This is what motivates you to write and complete your book.
3] When you get stuck at a specific scene or storyline along the writing journey, and it looks all out of place, just skip it for the moment and move on with what's in your head, and write the rest of the story. When done, return to the incomplete section and then reread and rewrite when it all comes together in your mind and heart. Writing from the heart always points you in the correct direction.
4] When writing in dialogue form, don't just write but speak it out aloud. In this way your story comes "alive" and you can just feel it in your mind. This will offer you a "sound of speech" sense and will make you feel like you are a part of the storyline and the characters.
That's it for now. I trust these few tips will offer you some enlightment and open up your mind and thoughts when writing. Enjoy the authorship journey. Until the next time, Au Revoir !!!