For me, since practice and playing are always the same thing, always with a song as the vehicle to set things up, I'm usually thinking that here I am again, the familiar notes are under these fingers, but just yesterday I really liked reaching to that other note which sort of opened a door.
So I think I'll try to get near to that place again, then hit that note to open the door, and visit the room in the darkness. I know there's furniture in the room because I bumped into things last time, but I haven't quite figured out what pieces of furniture are there. But maybe by just feeling around I'll be able to relax in an easy chair if I get my bearings. The rooms of darkness are a little spooky to me so I don't linger long. Maybe I'll take another door out, a door that has a little light coming through the cracks.
Many of the rooms I go to visit now are no longer pitch black, but rather dimly lit, and so I can feel around a little easier. The solos I know by heart occur in extremely bright rooms, there is little uncertainty, and the notes are hit with bravado.
If you play every day you will get an edge to your playing so that yesterday, or even the day before that, still provides enough courage for you to wander around and explore, finding your way with very little to go on.