I use the misery method.  I start a project, abandon it, obsesses over not having done any work on it, put it away and forget about it, remember it later with crushing loads of guilt and remorse for being so busy with life and social interactions then shove it bodily out of my mind only to have it crash back down on me like the guild Judas felt.  This process can be years.

Then sometimes I finish them or throw them out with a last dagger-like feeling of intense sorrowful guilt for being a quitter.

Gedvondur
"...I almost puked like a pregnant StackyMcRacky." --MillMan