You can't change the fruit without changing the root. Only by receiving Jesus Christ, and letting Him change you, can you be a truly unselfish person. Pride and selfishness always go together. A truly humble person cannot be selfish at the same time. Pride is hidden but manifests as selfish acts.
Selfishness is the cause of all evil.
All evil proceeds from selfish actions. Selfishness is the only manifest problem, but pride feeds it. Dealing with the root cause of the problem is the only lasting solution. Pride produces selfishness. All selfishness is pride.