30歳を過ぎたら、友達は量より質にこだわるべき！ (2/2ページ)
数は少なくても、今のうちに本音で話せる友達を作っておきましょうね！
参考：
The secret of happiness: Party while you are in college, but concentrate on a few good friends when you hit thirty, say scientists
http://www.dailymail.co.uk/sciencetech/article-3173947/The-secret-happiness-Party-college-concentrate-good-friends-hit-thirty-say-scientists.html
