Bill Wionter used to write about what he called "Purple Plan One". Actually, it's pretty simple. (Note, I did not say easy.) Under PPI, you do one task per day. Always do a liitle something. Day 1, clean the workbench off. Day 2, roll out the plans. Day 3, lay the spars down. Day 4, etc. You'd be surprised how fast things can come together this way. At least you see a little progress.

But I think every modeler has projects that can't get past the burnout stage. Witness my 1/4 scale Pietenpol from 1989.