Bale and Harry Kane each scored twice in a comfortable win.
Wales’ Bale, on loan from Real Madrid, has scored six goals in his past six games, with another three assists.
I’m very happy, he is a fantastic player and I’m so happy to work with a player like him, said Mourinho.
Bale, 31, arrived at Spurs with a knee problem following a season in Spain where he struggled with injuries and a lack of first-team football under Zinedine Zidane.
Nobody challenged him. We just supported him, Mourinho told BBC Sport.
I found psychological scars. When you have a couple of seasons with lots of injuries I think it is not about the muscular scars but the psychological scars – that brings fears and instability.
There is a moment when you are working very well and everyone around you is giving everything we can give, there is a moment where that psychological barrier has to be broken. And he broke it. It was him, not us. We just supported him, he added.
He recently said it is up to Real Madrid whether Bale could stay next season. The Wales forward has one year left on his deal with the club where he won four Champions Leagues in seven years.
I’m feeling good. A lot of games are coming thick and fast so it’s about recovering and getting ready for the next one.
Gareth Bale has scored in each of his last five Premier League home starts, a run that goes back to his first spell in 2013.