> From 2017 to 2019. So from 2 years, I had taken Ayurveda medicines to increase concentration in studies. So while taking herbs, my focus and concentration in studies were at peak level. But when I stopped consuming them for 1 year, I can't able to do my class-assignment and also my attendance in class is poor, also now first time I failed in my semester exam in 7 courses. So I feel that I am a victim of substance-dependence. How can I treat it in a cognitive-approach?