"Jermaine has had a tough start to life at Liverpool and he's still trying to adapt to his new club," said the former Barcelona midfielder.
"I understand the problems Jermaine has had because I know the fans sometimes become frustrated with me.
"Playing on the wing is never easy and I know all about it. For attackers it is more difficult to make an impact in the Premiership.
"People expect a lot. They want you to beat a defender, whip in crosses and score goals. But it's not always possible to do that.
"The manager wants Jermaine to run at defenders and beat players. That's not an easy job because sometimes you can be up against two men, particularly at home.
"I'm a bit older, I've got more experience and I will try and help him. That's not because he is my team-mate, it's because I think he is a good young player with a big future.
"I've told him that football can change in a week, a minute or even a second. It only takes an instant to score a goal and then everything looks brighter.
"The key is always to keep going, no matter what happens. If you are affected by the crowd or let your head go down, then the situation will never improve."