The author describes his 24-year history of type 2 diabetes (T2D) and effectiveness on diabetes control via medications and lifestyle management. In 1995, the author began having T2D conditions and started taking metformin three years later. His physician continued to increase his dosage and added three new drugs to control his elevated glucose level. From the period of 1991 to 2010, he suffered five cardiac episodes. In July of 2010, his average glucose value had risen to 280 mg/dL, HbA1C was 10%, ACR reached to 116.4, and triglycerides increased to 1,161. He also suffered kidney complications, bladder infection, foot ulcer, thyroid, and retinal problems. Although he had been taking the maximum dosages for four different diabetes medications, his glucose and A1C levels were continuously fluctuating with an upward moving trend. In early 2017, he developed a PPG decomposition model using the signal processing technique of wave theory from electronics communication engineering and geophysics to identify 19 components of PPG and their respective contribution margins. Major components of PPG waveform are medication, diet, exercise, and weather temperature, and others. His attached information investigation and PC illustrations secured the period beginning from 6/1/2015. By and by, the two significant times of metformin decrease (6/1/2015 - 12/8/2015) and post-medicine year (2016) are critical to research the drug impacts. From 2016 to 2019, a four-year period, the importance and effects of lifestyle management can then be clearly observed and studied in detail.