The phrase "convinced of being" is correct and usable in written English.
You can use it when you want to express that someone is firmly believing something or has strong evidence in favor of that belief. For example, "She was convinced of being the right person for the job."
But in my case it virtually replaced first love, for, ashamed of my looks and therefore convinced of being physically unattractive, I deliberately repressed my physical sensuality and sexual impulses.
He remained the ultimate intellectual, but he acquired many cultural interests, particularly a love of jazz, about which he wrote copiously: "It virtually replaced first love, for, ashamed of my looks and therefore convinced of being physically unattractive, I deliberately repressed my physical sensuality and sexual impulses".
Convinced of being the personification of the second coming, he swears he can kill people by rolling dice.
Regardless of how many facts you give, this person will always be convinced of being right, and that you're either misguided (if there is hope that you might give in) or wrong (if the sense is that you've rejected the ideas).
Young men, perhaps already convinced of being outcasts, are intoxicated by teachings that not only entrench this difference further but demands that they despise the society they leave behind.
This note of caution is supported by answers from 23 females who stated that they had not attempted post-treatment motherhood because they were convinced of being infertile after cancer treatment.
I'm not sure, but one thing I am becoming increasingly convinced of is what Salecl says: "Ideology that convinces us that everyone can make it if only he or she makes the right choice relies on blindness – we do not see that social constraints stop us making out of our lives what we wish for.
"What I am absolutely convinced of, is that no form of words would have been acceptable.
What I am convinced of is that we will not get out of our present difficulties by reworking old solutions.
What I am convinced of is that we have the hunger and we have some talent and we are committed to going as far as we can".
But what we are increasingly convinced of is that no one gets on one of those boats unless they feel they have no other choice".
