Real thumped Espanyol 5-0 to go ten points clear at the top of the table.
Kaka said: "I felt good tonight. I pulled off everything I tried and ended happy. The match has built my confidence and I'll try to stay at this level.
"I think we're the ones who make a game easy or hard for ourselves. Tonight was easy because we dominated from the start. We concentrated hard and always knew what we had to do.
"We must continue to score goals and it's good all of us can. Higuain scored again and Khedira's was a nice strike... That's good for the team."