Chelsea striker Tammy Abraham admits missing his spotkick in their UEFA Super Cup shootout defeat to Liverpool was a huge blow.
The 22-year-old striker missed the decisive kick in a shoot-out with Liverpool in Istanbul back in August and was left distraught and in tears.
The England international told Chelsea's official website: "The season before [on loan] at Villa, I had missed one out of eight or nine [penalties] so I had confidence.
"I remember walking up and the pressure got to me, nobody had missed up to that point so I knew I had to score.
"I had what I wanted to do in my head but I changed my mind when I was taking the run-up.
"Afterwards in the changing room, everyone came round me saying 'don't worry, it happens to the best players' but at the time I just didn't want to hear it.
"I wanted everyone to leave me alone, I was in tears. I lost a lot of confidence after that.
"I was doing well on my loans but when I came back to Chelsea, it just wasn't working - I couldn't get my first goal, I couldn't do anything.
"In my head I was wondering if it was worth all the stress because I was getting abused on Twitter, a lot of racist comments, people saying I wasn't good enough to be playing for Chelsea.
"It was the biggest down in anything I've done in football."