The phrase "difficult to be convinced" is correct and usable in written English.
You can use it when someone is having difficulty believing something or coming to an agreement. For example, "The students found it difficult to be convinced that they should give up their weekend plans for extra studying."
The best advice is to just be yourself, since you will find it is very difficult to be convincing acting like someone else.
City are still well placed to push United and retain the title but it will become increasingly difficult for Mancini to be convinced Balotelli can play his role.
All that fine print included on TV ads for prescription products certainly makes it more difficult for companies to be convincing.
3) Given the background signal in Figure 2C (compared with 2E), it is difficult to be completely convinced that hPros1 activates Mer but not Axl.
But Jews in Europe, not just in Germany, say that it is difficult to convince people who are not religious that circumcision is regarded as a command from God, and that without it a young man cannot enter Jewish society.
"But," confesses Ward, "it's been difficult to convince people we're so clever!" So, Lisa Pathfinder is a "stepping stone" mission to prove the technology for this ambitious gravitational wave experiment actually works.
If both move, it would rip the heart out of Arsenal's midfield, and Wenger has already said that it would be difficult to "convince people you are ambitious" after that.
It might be difficult to convince someone who is having a temper tantrum to use rational thought, but if you can get his rational, thinking mind to overcome his emotional response, It might be difficult to convince someone who is having a temper tantrum to use rational thought, but if you can get his rational, thinking mind to overcome his emotional response, he'll likely snap out of the tantrum.
What is more difficult is to convince politicians and airlines that they should do the same.
"It's difficult to convince people who are getting the highest salaries in industry to get one of the lowest-paying jobs," said Mr. Partovi, who is initially funding the foundation with his brother.
