yes! re your point re what if the "job itself not worth doing" -- when blocked that can be a tempting cop out. for pressfield's framework for this is simple and brilliant: when you try to look beyond the resistance, is there love there?
Oh yeah, good point. As Pressfield would put it, the important thing is to go Pro. And a Pro would finish the job that he started, even if it might not be "worth doing". Unless you're literally risking your life or something improbable like that, it's worth finishing what you start.