Chelsea caretaker boss Frank Lampard says confidence is an issue after defeat at Wolves marked his return.
Wolves were on the front-foot throughout and deserved victory which came via a goal from Matheus Nunes, the Portugal midfielder's first goal for the club since joining from Sporting Lisbon last August.
Nunes beat Chelsea goalkeeper Kepa Arrizabalaga with a strong drive from the tightest of angles after an attempted headed clearance by Kalidou Koulibaly.
Lampard said: "I thought the performance in the first half was 70% or so. It was enough for it to be an even game and there was a rocket from them out of nowhere.
"In the second half there was more energy, more chances and we got more people in the box. Maybe it was that feeling [missing on if] we could score. We have been working here for one or two days and it's about getting an understanding of that and the mindset of the team.
"There has been a lot of change and that's not an excuse but things need to improve and I think that performance summed it up. I have to get an understanding of it. When I say mindset, it's not necessarily a negative. You have to get used to winning and make it a habit. Credit to Wolves today, they were physical and stuck in for a win.
"We will work and recreate. We will get into those positions and repeat it. Maybe there's a feeling you won't score. I've been there before and as a club we need to address it.
"It's not where the club wants to be but it's the reality and we have to work through it. You have to get to a point where you can move forward. We need to lift it more than we did today."
