"I have to move on from what I did last season," said the Liverpool forward. "It was obviously great to win the FA Cup with Liverpool and become more established in the England set-up, but now I have to push on and further that.
"I cannot afford to rest on my heels. You can see from the competition we have at club level to start games that I have to improve at Liverpool first and foremost. Then I have to carry on trying to establish myself with England further.
"A club like Liverpool needs competition in every position and I think we have got that now. Up front there is a lot of healthy competition with Dirk coming in now.
"We all want to play and thankfully I started against West Ham. I was pleased for Dirk, though, he came on and did very well, but it was good to get the goal against West Ham. It has been a good start to the season for me. I am enjoying everything.
"I think when you are scoring goals you are confident that you are going to take the chances when they come around. That seems to be the case.
"There is a lot of pressure and the competition keeps you on your toes. You know you have to go out on the pitch, perform and score goals.
"It is going well at the moment and hopefully I can join up with England now and score a few more."