The Citizens star has admitted that he puts a lot of pressure on himself to perform for club and country.
He now has five goals in his past three matches, but he had previously gone eight without finding the back of the net.
"Honestly, last month I was no good and I wasn't happy. I played eight or nine games and I didn't score and I missed chances so I'm not happy with that," the 22-year-old told reporters.
"When this happens of course I cannot be happy. Sometimes football is like that. You have to keep working hard and try to score, try to help the team and work and that's what I have done.
"Always I think: 'Wow I have to score' because I'm playing for a big club in big competitions with big players.
"I think it happens with other players. I cannot talk about other players I can only talk about me when I'm not happy with me I want to shoot myself in the head because it's difficult for me.
"I take it [personally] of course. I think: 'Oh my god I have to score, I have to score, I have to score'. When I have the chance sometimes I miss because I think too much and put too much pressure on myself. I try. I'm getting better. I'm working to score and don't think about the pressure."