The 40-year-old said he is looking forward to The Hornets' for their opening game of the new Championship season against Burnley tomorrow.
"It's fair to say that we're underdogs again - people will be writing us off. But I believe in no fear," he told the club's official website.
"We're used to it by now and I think it's good fuel. I've played in a few teams that weren't fancied down the years but you can surprise people.
"A lot of that comes from belief within the camp, belief as individuals and belief as a club. Having a 'one club' mentality is very important."