i-adjective
easily bored; quick to lose interest; fickle
Describes a person or personality trait of getting bored quickly with things, hobbies, or relationships. Often used critically or self-deprecatingly.
彼は飽きやすい性格で、趣味が長続きしない。
He has a fickle personality and his hobbies never last long.
私は
I get bored easily, so I'm not good at sticking with the same job for a long time.