The 52-year-old Portuguese head coach was appointed on Friday on an 18-month contract, following the departure of Paul Heckingbottom to Leeds United the previous week.
Morais has worked with his countryman Jose Mourinho at Inter Milan, Real Madrid and Chelsea, winning the Champions League and titles in Italy and Spain. He has taken over a team that is in the Championship relegation zone after winning just one of their last 17 matches.
At his first press conference on Monday morning, he said: "I decided to come to Barnsley because it is a challenge and I love challenges. My way to live is challenging myself and challenging others to achieve what people think is impossible, and much more.
"Barnsley's team needs help and it needs to improve and make things better. It's a young team with potential and quality and will. I am coming in to build the belief that is needed for all the team and even the club. The goal is to be stable in the league.
"The belief what I have found here is a shy belief. I know the players have the belief inside of them but, for some reason, they haven't shown it in my many moments of the league.
"I know that there is quality and a will so I will find out what is the cause of the performances and results. My challenge is to change this and make things better.
"I definitely see Barnsley as a long project and this is the main reason that brought me here. It is a project for 18 months at the moment, but my thinking is much more than this."
Asked about his coaching style, the manager who has worked in Portugal, Sweden, Germany, Saudi Arabia and Tunisia said: "I am more than a coach. I am a leader. I am coach with vision, about not only the way to play but the way to live and make things greater, bigger, better.
"I want to go from what they have and change things in a way that the players can understand. I want it to be simple and progressive and not radical. I can't give them too much information in a short period. From the 4-4-2 that we have, we will slowly make changes so we can go to the formations I want which is 4-2-3-1 and 4-3-3."
Morais has no experience of the Championship as a manager but says he has monitored England's second tier closely all season. He added: "I have the knowledge that any coach needs to compete in the league, about the teams and players and systems. It is the knowledge of someone that is studying opponents, understanding tactics and being involved in football for many years."
Morais' first three games are likely to be vital for determining the outcome of the relegation fight, as the Reds host bottom club Burton Albion tomorrow before visiting Birmingham City and Hull City who are just above them in the league.
The Reds head coach said: "I don't see any game more important than the other but I see them all as opportunities to get points to help us towards the goal for the season."