i'd try maybe thinking of some plots.. that usually starts up the urge to write for me. although, most of the time that doesnt work. so, if that doesnt work for you, then maybe just try reading other stories that gave you a huge inspiration for your book or a new book you were thinking of starting! if you dont have any books that inspired you, then maybe try to look for some that might or just some that peek your interest. thats the best i can come up with at the moment, if you need any more tips im more than happy to help! good luck, lovely <3