Juan Carlos Garrido told Revista de la Liga that his first job at Real Betis is to bring back the belief.
Former Villarreal and Club Brugge coach Garrido takes over from Pepe Mel until the end of the season after the 50-year-old was sacked with Betis propping up the La Liga table.
However Garrido is confident that he can get the best out of the team and keep them in La Liga.
"Normally when a team is in this situation, you know that the players are out of confidence and you have to recover that for them," explained Garrido on Revista.
"Every player must know that they are good players and we need to get the best out of everyone. If we can get the best out of all the players then in my opinion we have a great team.
"As well as confidence we also need to look at our tactical ways and the balance between defence and attack. I am very happy to have the chance to be working for such an important club in Spain.
"I think we have a good team, better than the one when you see the table, but for us it is a fantastic challenge to work with this team."
Staying in the top flight in Spain is crucial for Garrido and he says he has the full support of the club's president Miguel Guillen.
"The president knows the situation of the team and he knows the most important thing is to keep the team in the first division," added Garrido.
"For me the way is clear and we have to be realistic. We all want Real Betis to be in La Liga next season and that is my main target."