Van Wolfswinkel's debut Barclays Premier League season has been interrupted by a niggling toe injury that forced him out for 13 weeks either side of an aborted comeback against Cardiff in October.
The 24-year-old Dutch striker's absence led to suggestions he had failed to settle at Carrow Road, leaving him poised to start the Boxing Day clash against Fulham with a point to prove.
"People said I wasn't enjoying it here. That frustrated me," said Van Wolfswinkel, who made his comeback as a second-half substitute in Saturday's goalless draw with Sunderland.
"When you're not playing people say 'it's only a toe injury, he doesn't really want to play or be here'. These people really annoyed me. I'm really, really happy here.
"It frustrates me to hear things like that, but what can you say? All I could do is focus on my recovery and get back on the pitch.
"I have a lot to prove and a lot to show. I can't wait to get started. I've had my holiday and I can't wait to play football."
Van Wolfswinkel, an £8.5million summer signing from Sporting Lisbon, insists his eagerness to return ultimately hampered his rehabilitation.
"I didn't listen to anyone and started too quickly again. I made some wrong decisions," he said.
"Playing against Cardiff (October 26) was my call. The physios said it's better I don't, but I wanted to.
"I wanted to play because I saw the team wasn't playing too well.
"You think 'it's just a toe' and I tried to play against Cardiff and help the team, but I found I couldn't and needed to take my time.
"I was very happy to be back. I was counting the weeks. I had a programme in my locker and it was getting longer each week - 13 weeks out in total. That was rubbish so I was so happy to be back.
"There were times when I thought this is taking too long and that was frustrating.
"There are two things I don't like to do and that's ride the bike and swim. I had to do both for 13 weeks."
Van Wolfswinkel sought advice from Dutch icon Johan Neeskens, the father of his girlfriend Bianka, as the weeks turned into months.
"My injury was really frustrating and Johan told me to take my time and recover well," he said.
"Johan is normal. To a lot of people legends are different people, but he's just normal and a great guy to hang out with it.
"He played in a great team and all over the world people know him."