Swami Vivekananda suggested— "Blame neither man, nor God, nor anyone in the world. When you find yourselves suffering, blame yourselves, and try to do better."[Source] He also told— "Each one of us reaps what we ourselves have sown. These miseries under which we suffer, these bondages under which we struggle, have been caused by ourselves, and none else in the universe is to blame. God is the least to blame for it."[Source]
In this article you'll find a collection of Swami Vivekananda's quotes where he stated/explained— we are responsible for what we are.