Joseph Murphy was a Divine Science minister and author. One of his best known works is "The Power of Your Subconscious Mind". I am not positive if this is the "Joseph Edward Murphy" from your question, but if his quotes are positive and deal with the potential of the subconscious he's probably your guy.
Joseph Murphy was a noted author and New Thought minister, best known for his book "The Power of Your Subconscious Mind." His work centered around the power of the subconscious mind in shaping our thoughts, behavior, and experiences. Murphy's teachings continue to influence the fields of self-help and personal growth.
Edward Regan Murphy
Edward Murphy has written: 'DAK TO'
Edward Sullivan Murphy was born in 1880.
Edward Preston Murphy died in 1958.
Edward Preston Murphy was born in 1904.
Arthur Edward Murphy was born in 1901.
Edward Murphy - rower - was born in 1971.
Edward Sullivan Murphy died in 1945.
Arthur Edward Murphy died in 1962.
Michael Joseph Murphy has written: '\\'
Joseph Murphy - author - was born in 1898.
Joseph R. Murphy was born in 1947.