I've been working on a book for about four years now. Every time I reach the middle, I get stuck and I go back and edit and rewrite everything. I've probably rewritten the whole thing at least seven times now. At first it was just editing out parts I felt were extra or amateurish or inconsistent but each time I do so, I start to question the plot even though I've done years worth of research to assemble it.
As of right now, I haven't written for months because I've had multiple ideas on how to entirely change the plot of my book and I don't know how to execute them. I have all of these ideas but piecing them together into a complex plot for the first time feels difficult.
Being a full time pre-med student in university isn't exactly helping either. I don't know what to do to bring myself back to writing. Even if my fingers haven't touched the keypad for months, my brain is constantly working. The standard solution would be to read more, work on other things, go for walks or force the writing out but I've tried.