There can be monotony in the nature of work you have been doing and probably this may not be your choice of work. You are just 22 years old and working for the last one and half  years only yet feeling disgusted is not a good sign as one has a long way to go in career and grow to heights. First and foremost do a self-assessment to identify what are your thoughts,  strengths and limitations. Analyse if this job role is compatible. Consult a Counselling Psychologist who can provide help and empower you to handle your emotions,  set goals and work on priorities.

Probably, you are unhappy about yourself or about something else. You can visit a psychologist to have detailed understanding.