I am a new member of this forum and have been working on a novel off and on for several years now. I think I have developed a very interesting and original plot but I never seem to get very far out of the gates every time I sit down to write. My two main approaches (both tried a half-dozen times) have been 1) to just sit down behind my PC and try to write the novel from start to finish and 2) to start instead with detailed pre-writing, outlines, timelines, character sketches, etc. Approach 1 fails because I find serious holes in the plot as I write and Approach 2 fails because after a few weeks of pre-writing, by the time I sit down to actually write the novel, I have a new, major idea to incorporate or direction to take that throws a lot of my planning out the window and I feel like I should just start anew. Because of my full-time job, I can only dedicate a few hours to writing an evening and I can't really take any time off. I would appreciate any advice.