I have a brother writing CA exams and facing failures.. I understand you completely..
Vata kapha prakruthi evaluation of prakruthi is difficult and sometimes takes about a month for doctors for analysis and to analysis of our own takes the whole of the degree.. You must be really intelligent and having great insite of yourself to have diagnosed your prakruthi as well as which rasa is good for you. Keep it up.. Most people don't even know whether a substance is edible or not. Haha
You didn't loose mental power, you just lost confidence and trust in you.
Remember : you have the most memory power, you have great mental strength and you will achieve anything you want. If you dint break after 3 attempts, don't break after 4 th too.. You are capable go for it.
Next Steps
meditation, wake up early in morning, sleep good at night, drink warm water
Health Tips
saraswatharista 5ml just before sleeping at night with milk.. 1/2 glass.