Feeling aimless, hopeless

Hi everyone,
I am a 24 year old male. After taking Amitriptyline 10 mg/day for two weeks I stopped realizing it’s side-effects such as daytime sleeplessness, intense emotional feeling, crying etc. I cried almost everyday but once a day for almost two months remembering my childhood memories with my parents. Now after six months I still feel some blockage on my head. It seems my aim, hopes, future-plans etc. are blocked from being interesting. For example, if I think about a good job, now I find nothing worthy or interesting but I should find benefits such as good quality of life in a good job. What's wrong with me ?