This is the 3224th most frequent French word.
réalisant
"Réalisant" means "realizing" or "fulfilling."
In this sentence, 'réalisant' is used as a present participle to indicate the action of completing or carrying out something while learning something new.
En réalisant ce projet, il a appris beaucoup de choses.
By completing this project, he learned many things.
Here, 'réalisant' is used as a gerund to express an action being performed concurrently to gathering understanding about someone's intentions.
Je suis en train de comprendre ses intentions en réalisant ses actions.
I am currently understanding his intentions by observing his actions.
In this case, 'réalisant' denotes the act of fulfilling or accomplishing a personal aspiration that causes happiness.