The Italian squad endured a torrid start to the season in Australia, but fought back in Malaysia and won again in Bahrain, where Felipe Massa led teammate Kimi Raikkonen for their first one-two of the year.
Ferrari are now one point behind BMW in the standings, with McLaren a further point back.
But despite their current form, Domenicali says his team are working as hard as ever ahead of next week's Spanish Grand Prix.
"The real Ferrari is not the one we've seen at the Australian GP. The team reacted immediately and has shown the great potential of our package, which is extremely competitive," Domenicali told Ferrari's website.
"Having said that, we have to be aware. We're approaching the Spanish GP with a maximum effort, keeping our feet on the ground: we were not depressed after the first race and we are not euphoric after Bahrain.
"We need absolute motivation and we are aware of the fact that our competitors are getting better.
"We need the best Ferrari with the best drivers, the best engineers and the best mechanics to fight them on the track."autosport.com