Ricardo says the end of his association will bring mixed emotions.
"It will not be easy, mentally, I know," he said on the Tribune Player website. "Every round I will turn into a car will mean one circle closer to my last in Red Bull racing suit.
"And when I go out last time in Abu Dhabi … I think I'll have a good good cry."
Ricardo announced his first Grand Prix victory in Canada in 2014 and held former team-mate Sebastian Vettel to win the race for Monaco this year as moments of his delay in Red Bull.
Convinced that he has given all of the team, Riccardo says his decision not to sign a new contract was not reached during a flight to Los Angeles after the Hungarian Grand Prix in July.
"I have done a lot with Red Bull … I became the one I always wanted to be, just for my part," he said.
"And I know, I know, that I can leave to give them everything and get it in return.
"I know the next part of my journey will not always be easy, but I had to take this step to try to be the best version of me. That's all it was."
The fourth in its debut season for Red Bull in 2014 remains the best performance of Ricciardo in Abu Dhabi.
"Sometimes, this season is incredibly difficult. I was talking about rolling with the blows … but the man, even I get sick after a while," Riccardo said.
"I feel incredibly privileged to go for Red Bull Racing and be part of the Red Bull family for 10 years … I will remember this team, these great people, this family forever."