i m 25 years old ,  clinical pathologist i m resident at university hospital & i have psychiatric problem i totally do not trust myself, i m totally confused & i have personality disorder but i can not accurately define it i also have mood swing & can not take decision .
Degree understand your concerns went through your details. I suggest you not to worry much.  Being a clinical pathologist, how can you conclude that you have some mental disorder / psychiatric problem ? Presumption about your own health is always bad and make you worried and anxious. The incidents you point out can happen to any normal person. They are just happenings. Part of life. You could just be lacking self-confidence or self belief. They are not classified as personality disorder. Please consult a psychologist to get answer to your problems. If you require more of my help in this aspect, Please post a direct question to me in this website. Make sure that you include every minute details possible. I shall prescribe the needed psychotherapy techniques which should help you cure your condition further. Hope this answers your query. Available for further clarifications. Good luck.