Tottenham captain Heung-min Son says last season was the toughest of his career.
Son admits he's happy this term under new manager Ange Postecoglou.
"It was obviously a tough year for myself and obviously the team," said Son. "It was tougher because I expect more from myself. I blame myself firstly because I started every single game. I feel like I let the club, the players and the manager down.
"It was a really hard time but different reasons: pain, style [of play], whatever.
"The thing is it made me even stronger. I've been in professional football, starting in Germany, 18 years. Now I'm here eight or nine seasons. It's been a long journey. I thought now I'm an experienced player, I've face all the different things and tough times.
“Last year I would say is probably the toughest season I've faced but I also learned the most, even more than when I was 18 which is very, very surprising to me because I'd never expect I was going to learn something to make me stronger."
Son added on Postecoglou: "In the changing room, the club and the stadium, the vibes are really, really positive.
"For example, on Tuesday I had an anti-doping test after training and the guy said, 'Wow, he changed the vibes!'
"Because last year they turned up and could see us being down. On Tuesday he came and said the vibe is much better than last year and looks really, really positive. Which is what you're looking for."