Despite suffering back-to-back losses, this summer's tournament marks just the third time that England have made it to the final four, leading to praise from Mourinho.
"What England clearly bring home is a team with a future," he told Russia Today. "You can feel and read in the details that the relationship between Gary (Gareth Southgate), Steve [Holland, assistant manager] and the players is a good relationship.
"They have a good base for continuity. Normally England and other teams when they don't get to objectives they change, but I think England has all the reasons not to do that and give continuity to the process and believe in the process.
"There are three or four players who will not be in the next generation and can be easily replaced by other talents in the Premier League. The future can be very good. I wouldn't be risking a lot by saying at the next World Cup England have conditions to do better.
"I hope the frustration of the last two matches will not change anything. I think the feeling after the Euros [in 2016] was the team was over, but the feeling is not that now. England have a goalkeeper for the future, they have a striker for the future, midfielders for the future and a base for continuity; that is a different feeling."
England have now lost three of their past five matches - their previous three losses came over a period of 28 matches.