The 33-year-old world number one was riding the crest of a wave going into the opening major of 2017, the Masters, at Augusta National in April, as he ended 2016 as US Open champion and was named PGA Player of the Year and PGA Tour Player of the Year.
Johnson won three successive PGA Tour tournaments in the build-up to the Masters and appeared likely to get his hands on the winner's green jacket.
But a back injury he picked up when slipping down the stairs at his rental home in Augusta just prior to the Masters forced him to miss the tournament and has left him searching for his top form since.
Johnson missed the cut in his attempt at defending his US Open crown, before finishing 16 shots behind winner Jordan Spieth in a tie for 54th place at last month's Open Championship.
There have been shoots of recovery of late as he secured a tie for eighth at the RBC Canadian Open, before a tie for 17th at the Bridgestone Invitational and he is now looking to take that improved form to Quail Hollow for the final major of the year.
Johnson, who has missed the cut on two of his previous three outings at the North Carolina course, said: "Obviously, it’s really frustrating. But things happen. You’ve just got to deal with them, and you know, I feel like the golf game’s in really good shape right now.
"I had a good practice session on Monday. Played nine holes. Feel like I’m driving it really well again."
He added: "I feel like I’m hitting good shots with it. They are going where I’m looking. I think this is going to be a very good week."