Hello Doctor, Am 45 Yrs Old And An IT Professional,

Hello Doctor, Am 45 yrs old and an IT professional, my job requires constant learning and upgrading skills, unfortunately I feel very lazy and lack of motivation or able to concentrate when I start reading, this started very recently.. am I suffering from ADD how do I concentrate and make my self motivated is there a natural way.. or this is symptoms of something else.. Please advise. Thanks in Advance