If you have a feeling that you must do everything perfectly and get stressed when it does not happen, then such beliefs are result of:

Internal pressures

The correct answer is Option (3) → Internal pressures

Frustration results from the blocking of needs and motives by something or someone that hinders us from achieving a desired goal. There could be a number of causes of frustration such as social discrimination, interpersonal hurt, low grades in school, etc. Conflicts may occur between two or more incompatible needs or motives, e.g. whether to study dance or psychology. You may want to continue studies or take up a job. There may be a conflict of values when you are pressurised to take any action that may be against the values held by you. Internal pressures stem from beliefs based upon expectations from inside us to ourselves such as, ‘I must do everything perfectly’. Such expectations can only lead to disappointment. Many of us drive ourselves ruthlessly towards achieving unrealistically high standards in achieving our goals. Social pressures may be brought about from people who make excessive demands on us. This can cause even greater pressure when we have to work with them. Also, there are people with whom we face interpersonal difficulties, ‘a personality clash’ of sorts.