Of his horrible stage fright!
Pete Conway says:
"With the boys there the stage fright won't be an issue. I know he suffered from that earlier on. But he'll have all that support of his band of brothers. It's so wonderful that he has joined Take That again.
"It will be a solid and nice year for him. He'll have fun and will have genuine friends around him for support. It can get a bit lonely on your own. They are all married and Rob has a girlfriend. They're more mature. It won't get as wild as it used to."
It might get a little wild — he IS Robbie Williams!
[Image via WENN.]