Van Persie has struggled for fitness for much of 2013-14 and his goal tally of 11 in the Premier League is way down on previous seasons.
But the Dutchman says he is looking forward to the rest of the campaign with a positive mindset and wants to help United finish as high as they possibly can, with the Champions League still an aim.
"I've been a bit up and down. I had a couple of niggles here and there - a problem with my toes, a groin injury and then, for the first time in a few years, a problem with my thigh," van Persie told United Review before Sunday's clash with Liverpool at Old Trafford.
"After an injury you lose a bit of rhythm, which makes it harder to come back and produce that same level of performance straight away.
"You need minutes on the pitch and those games I played when I came back really helped me, along with the couple of goals I've scored since I came back.
"My target now is to get stronger, better and more productive each game. Most importantly, I want to help the team win games as that's what this club is about.
"Last week's win at West Brom was quite comfortable and that's only happened a few times this season. Ideally, you want more of those matches. But any win will do, especially in the coming weeks. We have to try to end the season on a high. We owe that to the fans.
"It's always important to win and we'll approach the next four games as we approach every game - individually.
"Every game will be looked as one on its own, without looking too far ahead. We just think about preparing so we can win the next game and when that's out of the way we do the same again for the next one.
"In that way, this season is no different to any other. This is how we've always worked at Manchester United and it's no different now. Ideally, we'd be top of the league. But just because we're not it doesn't change the way we prepare and focus."