But the Dutchman is pleased with how he has boosted the confidence of the squad after their dismal start to the Premier League campaign.
Chelsea were languishing in 15th on 18 points when Hiddink took over and looked in danger of dropping into a relegation battle, but he has since steadied the ship with Chelsea looking at a mid-table finish.
Hiddink said: “I had to restore confidence in the team and club, I’m not easily happy about myself but I am happy the team reacted when we were in a desperate situation and they started sweating because there are experience in the past that big clubs can go down.
“I am satisfied with reaction from team but I would have loved to get next round of Champions League and get to the FA Cup final and if that happened I would have given myself a 10+.”
Hiddink believes one of the biggest difficulties he has had to overcome at Chelsea is the injuries crisis he faced at centre-back.
The 69-year-old is proud of how his side coped with injuries, but passed a lot of the credit onto his back-room staff.
“At the time we didn’t get through FA Cup or Champions League we did not have a lot of players in the centre of defence, we had to reshuffle because we lost Zouma and John.
“The team reacted in a difficult situation and I’m happy they did. I didn’t do it myself, I had the support of Steve Hollands and Eddie Newton and the team and staff members, it’s not a one-man issue.
“Newcastle are also a big club and they’re still fighting to get out.
“What I had to do to get them more confident is some were complacent so we had to break the mould in that and there is real danger when you are in 16 or 17 position.”