"The key is to focus on just cricket and try to make up for lost time," he added.
Asif has been picked for the three-match series starting November 24 and the lanky bowler said he would be looking to continue his good domestic form.
"It has been nearly two years since I played a Test for Pakistan. The good thing is that I have been playing regularly in the Quaid-e-Azam Trophy matches and that has helped me find my rhythm and form and get my confidence back," he said.
"There is nothing better for a bowler then to bowl in the longer version of the game," he added.
The pacer made a comeback to the national team in the Champions Trophy playing just one game against Australia after completing a 12-month ban for failing a dope test in the Indian Premier League last year.
In a stormy year, Asif was also fined Rs one million by the Pakistan Cricket Board for being detained in Dubai for 19 days after authorities found a small quantity of hashish in his wallet and deported him without pressing any criminal charges against him.