After three months in the wilderness following the slap-gate episode, controversial Indian off-spinner Harbhajan Singh is back to what he does best and eager to prove that he remains a match-winner.

"The last three months have been tough. There have been lot of downs, I won't say ups. But I'm happy it's over and I'm looking forward to the Sri Lanka series," the spinner told a news channel.

Harbhajan slapped India teammate S Sreesanth during an Indian Premier League match which saw him being banned from the remainder of the IPL, apart from incurring a five-ODI ban from the BCCI.

"I faced a lot but that is behind me and there is no point going back to what happened. Bad times are over and I just want to focus on my game and keep on playing the kind of cricket that I have been playing for the last 10 years.

"I want to bowl well and bat well and win games for my country and that's what is important to me," said the volatile spinner.

Harbhajan lamented missing the tri-series in Bangladesh and the Asia Cup in Pakistan but said he was now looking forward to the Sri Lanka series.

"Every cricketer wants to play each and every game and I wanted to be there in Bangladesh and Pakistan and I also wanted to represent the Mumbai Indians and play all the games. But things obviously didn't go well for me.

"But I have learnt a lot from whatever happened and looking forward to starting well," Harbhajan said.