It's important to be the kind of person who doesn't cause trouble for others.
It's important to have the kind of personality that doesn't make a nuisance of oneself.
この場合、次のような言い方が自然だと思います。
ーIt's important to be the kind of person who doesn't cause trouble for others.
「他人に迷惑をかけないような人になるのが重要だ」
「個性」を使うなら次のように personallity を使っても言えます。
ーIt's important to have the kind of personality that doesn't make a nuisance of oneself.
「人に迷惑をかけない個性を持つことは重要だ」
ご参考まで！
カナダ 
