Milan lost 2-0 on Sunday, but Seedorf insists the result is no setback.
"We still have the same feeling of confidence, that hasn't changed," Seedorf said.
"The results in the Champions League and yesterday came despite great performances by us. There is no reason to not believe in us.
"Our courage was the foundation of our good performance against Juve.
"We played with speed, quality and created lots of chances but unfortunately we couldn't take them.
"The performance was very important, it can give the lads confidence for the upcoming months.
"Now we have to think about finishing the season well and next season will definitely be a different story."
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