Germany international Havertz joined Chelsea in the summer in a £72million move from Bundesliga club Bayer Leverkusen.
The 21-year-old has made a mixed start to his Blues career, receiving criticism for ‘disappearing’ in matches but also contributing four goals – including a hat-trick – and two assists.
Chelsea finished fourth in the Premier League last season but are expected to challenge for the title this term after a summer in which Timo Werner, Hakim Ziyech and Ben Chilwell also arrived in west London.
Discussing his aims at Chelsea, Havertz said: ‘The first target, always, is to have success and the main thing is to be healthy and have fun playing football.
‘Then, of course, you have to win titles and we have big players here, a good coach, so our goal is to win titles – that’s the reason why we are all here, and hopefully we can do that.
‘You are always happiest on the pitch when you win, when you score goals and you make assists.
‘The worst feeling in football is to lose games and play bad – after that you have, like, three days in which you only think about the game before.
‘So the best thing is to make sure you win games, score goals and have fun. That has always been the most important thing for me.’
Speaking to Chelsea’s matchday programme ahead of their Champions League clash against Rennes on Wednesday, Havertz also admitted there is not a ‘bad player’ in the Premier League as he attempts to adjust to English football.
‘Even the teams that play in the lower regions of the league have very good players and it’s all about the technical football.
‘I think every team wants to attack and score goals, so the games are very difficult to win. The whole league is very good – that’s the most different thing here.’