Pochettino will start Alli against Barnsley in the Carabao Cup tonight, despite admitting the England ace has gone off the boil.
Pochettino said: “He is still very young. His potential is massive.
“He did very well in the last two seasons and it's not easy for a young player to keep this level in every game.
“It is about maturity and finding a balance in training, competing, life and everything.
“The player is not only what we see on the pitch. He is not a number or furniture.
“There are a lot of things that affect them and are around them when they are young.
“Dele has gone from zero to 100 like that. You need to find your balance.
“I am happy with his performance. He is doing very well.
“His potential is massive but we need to know he is still young and we need to help him to find that balance to sustain his career."