The centre-back is yet to be offered a new contract and is expected to leave after the current campaign, though the Blues have insisted they could still extend his stay before his current deal expires.
And Terry feels he is still good enough to play Champions League-level football for some time and reiterated his desire to remain at Stamford Bridge.
"While I’ve got a couple of years left, the main thing for me is to fully focus on that and give everything," he told reporters at The London Football Awards.
“I’ve definitely got two or three years in me. I’d be gutted if it isn’t at Chelsea, I’ve said clearly I want to stay.
“As a player in your mid-30s you get written off a little bit.
“Pretty much like the team early on in the season! We get written off and all of a sudden, a couple of wins and who knows what’s going to happen?”
READ MORE | Terry: Chelsea have great chance against PSG
The 35-year-old is hoping to go into management after he brings his playing career to an end, but admits it is not going to be easy.
“Doing my badges has taken a bit longer than expected," he added.
“I’ve had so many managers and learned so much it would be wasted if I don’t dip my toe in at some point in my career.”
Chelsea are looking to overturn a 2-1 deficit when they host Paris Saint-Germain in the second leg of their Champions League tie on Wednesday and the defender is anticipating a good performance, adding that he hopes Guus Hiddink can stay on beyond this season.
“Those nights at the Bridge are unbelievable. They are big occasions. We have players who are hungry and have had a lot of disappointments in the competition that want to go on further, so it’s going to be a good game.
"If he [Hiddink] stays on that will great. He’s shown he’s a top-class manager and other things may come for him.”