My antidote for frustrations with roadblocks and slow progress on that "Grand Ultimate Project" that got me into this in the first place, is to interspace it with occasional little, satisfying projects that build my skill level with one small part of the whole. I use as inspiration those artists who can capture an entire face or personality with a few brush strokes, and indulge in a bit of minimalism. Take one aspect of that tool kit you've invested in, and try to squeeze something out of it that will surprise, educate and refresh you. The GUP still holds my heart, but it can't be my unrelenting focus.