"Performances obviously haven't been there as I would've probably liked, but I'm not too disheartened," Holder said.
"I don't beat myself up. I don't get too worried because I know my ability. I know what I can produce. I just know that an innings is around the corner, a bowling effort is around the corner," he added.
"I've done a lot of thinking, I've done a few technical sessions trying to work through a few things that I wanted to correct. I'm in really good spirits. I know the performances will come and I'm just being as patient as I possibly can."