I have complete my bsc 3rd year in this year. My age is 21. I have been suffering from depression since 2013. I started taking from 2016 to 2017. Now I feel quite relaxed. But my past memories, songs of few movies, incidents in my life keep on going in my mind. I have noticed that I continuously keep on speaking in my mind .few people say that "you sometimes smile and talk with yourself being distracted from present" I want to know that is it a problem or not. If it is then what is better. Yoga meditation or psychiatric pills. If pills then whom should I consult.