Moving Forward -- A Writing Question

Q: How do you keep yourself moving AHEAD, rather than "backing and filling" --editing--rather than creating?  
A: I tend to write in a pretty linear fashion -- start at chapter one and keep going. Sometimes I have an inspiration for a scene pretty far ahead -- or even the ending -- and I'll write it down and file it away till time to use it.  

I edit as I go -- reading what I wrote the day before and fixing what needs fixing before beginning the next bit. This has the virtue of getting me...