Hernandez scored after coming off the substitutes' bench as Mexico beat Croatia 3-1 to finish second in Group A behind hosts Brazil.
"This is a goal that gives me a lot of confidence," he said. "But I'm never going to feel pressured by anything. I don't live off goals.
"I live off enjoying myself, off the confidence I have in myself and something that many people, throughout this year, have not had in me.
"I feel I'm on the right path and I want to continue like this. I had three very good years with the national team and then one year in which I did not play for my club and I ended up on the bench.
"We are going to enjoy this win, it was a huge step forward. We are very humble and respectful. We will think of Holland next. One must focus on the present and take it one game at a time."
Mexico take on Group B winners the Netherlands on Sunday in Fortaleza; Van Persie missed the 2-0 win over Chile on Monday through suspension but will return this weekend.
"It will be a joy," Hernandez said. "He is a team-mate with whom I've experienced two important years.
"I've learned a lot from him, we won a title and it will be very nice to see him again."