Higuain scored a brace in the 5-1 victory over Osasuna.
The striker said: "The coach had faith in me again and I managed to respond. I'm happy for the victory and with tallying 101 goals for this club. It makes me proud and incredibly happy.
"We have a great lead in the championship and we must keep up the good work till the end of the season. There are eight games left and we're calm to win the title we all want."