Holding a 1-0 lead in the two-match series, Pakistan are well placed to bounce back from drawing their last series with Zimbabwe.
Victory by seven wickets in the first Test in Abu Dhabi has given Pakistan the perfect platform to enhance their Test match reputation.
"This is a good time for us to win. There are a lot of people waiting for us to win," Younus told a press conference.
"The last time we played against South Africa in their home and the way they beat us, it hurt," added Younus of the Test series which South Africa won 3-0 in February.
"This is the right time to win against them. During the first match, we said to ourselves that if we win this game by 10 wickets or an innings it will be very nice. And now it is a good time again. If we make it 2-0 it will be very good for us."
Younus has consulted fellow Pakistan batsman Shan Masood, who also plays for the same Habib Bank Limited team in Pakistan.
"Shan Masood is my team-mate in Pakistan at domestic level. Before this series, we had a camp in Karachi and he worked with me," said Younus.
"We talked about this series and how we were going to approach this series, especially when playing the spinners.
"And Khurram Manzoor is also a good young guy. He always plays positive cricket and I told him to keep playing that way. We have some young good players coming in and hopefully they will keep coming in."
Team manager Moin Khan hopes the players carry the energy they showed in the first Test into the second encounter.
He said: "They were pumped up when we started this series. I am looking forward to the same mood of the team for this match. The body language is very positive."
South Africa will be without key batsman Hashim Amla while there is also an injury doubt surrounding premier fast bowler Dale Steyn.
Losing world number one-ranked bowler Steyn on top of Amla, who tops the ICC's batting rankings, would be a huge blow for the Proteas, who need to win in Dubai to claim a share of the two-Test series.
Amla is back in South Africa with his heavily pregnant wife while Steyn has a hamstring strain which will be assessed again on Wednesday.
Proteas team manager Dr Mohammed Moosajee said: ''Hashim's wife hasn't given birth yet, so he won't be playing in tomorrow's Test match.
''Dale sustained what was initially thought to be a right hamstring strain but fortunately the MRI scan revealed that there was no major pathology so we are treating it as tightness.
''He will undergo a fitness test either this afternoon or at the latest in the morning.
''The challenge with a tight hamstring is the fear of aggravating it. It could easily become a strain or progress into a tear, so we will be managing it carefully especially with a long tour ahead of us.''