It is the hopeful buoyant cheerful attitude of mind that wins. Optimism is a success builder pessimism an achievement killer Orison Swett Marden dhavalvadi 4 years ago It is the hopeful buoyant cheerful attitude of mind that wins. Optimism is a success builder pessimism an achievement killer Orison Swett Marden 1 It is the hopeful buoyant cheerful attitude of mind that wins. Optimism is a success builder pessimism an achievement killer Orison Swett Marden It is the hopeful buoyant cheerful attitude of mind that wins. Optimism is a success builder pessimism an achievement killer Orison Swett Marden