The 26-year-old ended his four-game search to find the net in Brazil as he fired his side into the semi-finals of the tournament in their 1-0 win over Belgium in Brasilia.
Higuain told FIFA.com: "I feel incredibly happy, and I'd like to share that happiness with my family and the whole of Argentina.
"Ever since the first game I've been saying that I wasn't worried, that my first goal would come, and fortunately it came at a crucial time.
"It's been a long time since Argentina reached the semi-finals and I'm happy it's this group of players that managed it, because they deserve it. Now we want to keep going and reach the Final."
Argentina will face the winner of the clash between the Netherlands and Costa Rica in their semi-final match next week.